Fix warnings about unused variables [-Wunused-variable]

Fixes the following GCC 5 warnings:
```
drivers/gles2/rasterizer_scene_gles2.cpp:1139:15: warning: unused variable 'offset' [-Wunused-variable]
drivers/gles2/rasterizer_scene_gles2.cpp:1205:39: warning: unused variable 'multi_mesh' [-Wunused-variable]
drivers/gles2/rasterizer_storage_gles2.cpp:359:7: warning: unused variable 'srgb' [-Wunused-variable]
drivers/gles2/shader_gles2.cpp:1016:45: warning: unused variable 'texture_hints' [-Wunused-variable]
editor/animation_track_editor.cpp:776:9: warning: unused variable 'keys_to' [-Wunused-variable]
editor/editor_inspector.cpp:273:7: warning: unused variable 'vs_height' [-Wunused-variable]
editor/editor_themes.cpp:202:10: warning: unused variable 'begin_time' [-Wunused-variable]
editor/editor_themes.cpp:239:10: warning: unused variable 'end_time' [-Wunused-variable]
editor/plugins/animation_blend_tree_editor_plugin.cpp:726:17: warning: unused variable 'an' [-Wunused-variable]
editor/plugins/script_text_editor.cpp:1278:8: warning: unused variable 'fold_state' [-Wunused-variable]
main/main.cpp:132:13: warning: 'use_vsync' defined but not used [-Wunused-variable]
modules/cvtt/image_compress_cvtt.cpp:231:8: warning: unused variable 'y_end' [-Wunused-variable]
modules/cvtt/image_compress_cvtt.cpp:311:6: warning: unused variable 'shift' [-Wunused-variable]
modules/gdscript/gdscript_editor.cpp:58:7: warning: unused variable 'th' [-Wunused-variable]
modules/gridmap/grid_map.cpp:1084:6: warning: unused variable 'ofs' [-Wunused-variable]
modules/theora/video_stream_theora.cpp:442:9: warning: unused variable 'tr' [-Wunused-variable]
modules/visual_script/visual_script_editor.cpp:2606:6: warning: unused variable 'count' [-Wunused-variable]
modules/visual_script/visual_script_editor.cpp:2829:6: warning: unused variable 'seq_count' [-Wunused-variable]
modules/visual_script/visual_script_editor.cpp:2844:24: warning: unused variable 'vnode_function' [-Wunused-variable]
modules/websocket/lws_peer.cpp:122:12: warning: unused variable 'peer_data' [-Wunused-variable]
modules/websocket/lws_peer.cpp:135:12: warning: unused variable 'peer_data' [-Wunused-variable]
modules/websocket/lws_peer.cpp:63:12: warning: unused variable 'peer_data' [-Wunused-variable]
modules/websocket/lws_peer.cpp:91:12: warning: unused variable 'peer_data' [-Wunused-variable]
platform/android/export/export.cpp:763:16: warning: unused variable 'node_size' [-Wunused-variable]
scene/gui/rich_text_label.cpp:850:10: warning: unused variable 'x_ofs' [-Wunused-variable]
scene/gui/text_edit.cpp:653:8: warning: unused variable 'tab_w' [-Wunused-variable]
scene/resources/bit_mask.cpp:186:6: warning: unused variable 'i' [-Wunused-variable]
scene/resources/mesh.cpp:549:20: warning: '_array_name' defined but not used [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:107:10: warning: unused variable 'v2' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:108:10: warning: unused variable 'v3' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:109:10: warning: unused variable 'v4' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:110:10: warning: unused variable 'v5' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:111:10: warning: unused variable 'v0n' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:112:10: warning: unused variable 'v1n' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:113:10: warning: unused variable 'v2n' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:114:10: warning: unused variable 'v3n' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:115:10: warning: unused variable 'v4n' [-Wunused-variable]
servers/audio/audio_rb_resampler.cpp:116:10: warning: unused variable 'v5n' [-Wunused-variable]
servers/visual/default_mouse_cursor.xpm:2:21: warning: 'default_mouse_cursor_xpm' defined but not used [-Wunused-variable]
```

24 files changed, 23 insertions, 124 deletions

diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index 56605a9fe5..2007d11b98 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -1136,8 +1136,6 @@ void RasterizerSceneGLES2::_setup_geometry(RenderList::Element *p_element, Raste
 								bone_weight[3] = (weight_ptr[3] / (float)0xFFFF);
 							}
 
-							size_t offset = i * 12;
-
 							Transform transform;
 
 							Transform bone_transforms[4] = {
@@ -1202,7 +1200,6 @@ void RasterizerSceneGLES2::_setup_geometry(RenderList::Element *p_element, Raste
 		} break;
 
 		case VS::INSTANCE_MULTIMESH: {
-			RasterizerStorageGLES2::MultiMesh *multi_mesh = static_cast<RasterizerStorageGLES2::MultiMesh *>(p_element->owner);
 			RasterizerStorageGLES2::Surface *s = static_cast<RasterizerStorageGLES2::Surface *>(p_element->geometry);
 
 			glBindBuffer(GL_ARRAY_BUFFER, s->vertex_id);
diff --git a/drivers/gles2/rasterizer_storage_gles2.cpp b/drivers/gles2/rasterizer_storage_gles2.cpp
index adf07c2e4f..059c334b94 100644
--- a/drivers/gles2/rasterizer_storage_gles2.cpp
+++ b/drivers/gles2/rasterizer_storage_gles2.cpp
@@ -356,7 +356,6 @@ void RasterizerStorageGLES2::texture_allocate(RID p_texture, int p_width, int p_
 	GLenum type;
 
 	bool compressed = false;
-	bool srgb = false;
 
 	if (p_flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING) {
 		p_flags &= ~VS::TEXTURE_FLAG_MIPMAPS; // no mipies for video
diff --git a/drivers/gles2/shader_gles2.cpp b/drivers/gles2/shader_gles2.cpp
index 216c911a6c..5f4a3fd01c 100644
--- a/drivers/gles2/shader_gles2.cpp
+++ b/drivers/gles2/shader_gles2.cpp
@@ -1013,8 +1013,6 @@ void ShaderGLES2::use_material(void *p_material) {
 	int tc = material->textures.size();
 	Pair<StringName, RID> *textures = material->textures.ptrw();
 
-	ShaderLanguage::ShaderNode::Uniform::Hint *texture_hints = material->shader->texture_hints.ptrw();
-
 	for (int i = 0; i < tc; i++) {
 
 		Pair<ShaderLanguage::DataType, Vector<ShaderLanguage::ConstantNode::Value> > value;
diff --git a/editor/animation_track_editor.cpp b/editor/animation_track_editor.cpp
index 6c68648bc0..77be561477 100644
--- a/editor/animation_track_editor.cpp
+++ b/editor/animation_track_editor.cpp
@@ -29,6 +29,7 @@
 /*************************************************************************/
 
 #include "animation_track_editor.h"
+
 #include "animation_track_editor_plugins.h"
 #include "core/os/keyboard.h"
 #include "editor/animation_bezier_editor.h"
@@ -772,9 +773,6 @@ void AnimationTimelineEdit::_notification(int p_what) {
 		hsize_rect = Rect2(get_name_limit() - hsize_icon->get_width() - 2 * EDSCALE, (get_size().height - hsize_icon->get_height()) / 2, hsize_icon->get_width(), hsize_icon->get_height());
 		draw_texture(hsize_icon, hsize_rect.position);
 
-		float keys_from = get_value();
-		float keys_to = keys_from + zoomw / scale;
-
 		{
 			float time_min = 0;
 			float time_max = animation->get_length();
diff --git a/editor/editor_inspector.cpp b/editor/editor_inspector.cpp
index 36c3102840..49d9dca701 100644
--- a/editor/editor_inspector.cpp
+++ b/editor/editor_inspector.cpp
@@ -267,11 +267,6 @@ void EditorProperty::_notification(int p_what) {
 		} else {
 			keying_rect = Rect2();
 		}
-
-		//int vs = get_constant("vseparation", "Tree");
-		Color guide_color = get_color("guide_color", "Tree");
-		int vs_height = get_size().height; // vs / 2;
-		//	draw_line(Point2(0, vs_height), Point2(get_size().width, vs_height), guide_color);
 	}
 }
 
diff --git a/editor/editor_themes.cpp b/editor/editor_themes.cpp
index 6dfd5ef573..888117d90e 100644
--- a/editor/editor_themes.cpp
+++ b/editor/editor_themes.cpp
@@ -36,7 +36,6 @@
 #include "editor_scale.h"
 #include "editor_settings.h"
 #include "modules/svg/image_loader_svg.h"
-#include "time.h"
 
 static Ref<StyleBoxTexture> make_stylebox(Ref<Texture> p_texture, float p_left, float p_top, float p_right, float p_botton, float p_margin_left = -1, float p_margin_top = -1, float p_margin_right = -1, float p_margin_botton = -1, bool p_draw_center = true) {
 	Ref<StyleBoxTexture> style(memnew(StyleBoxTexture));
@@ -199,8 +198,6 @@ void editor_register_and_generate_icons(Ref<Theme> p_theme, bool p_dark_theme =
 	exceptions.push_back("StatusWarning");
 	exceptions.push_back("NodeWarning");
 
-	clock_t begin_time = clock();
-
 	ImageLoaderSVG::set_convert_colors(&dark_icon_color_dictionary);
 
 	// generate icons
@@ -235,8 +232,6 @@ void editor_register_and_generate_icons(Ref<Theme> p_theme, bool p_dark_theme =
 	}
 
 	ImageLoaderSVG::set_convert_colors(NULL);
-
-	clock_t end_time = clock();
 #else
 	print_line("SVG support disabled, editor icons won't be rendered.");
 #endif
diff --git a/editor/plugins/animation_blend_tree_editor_plugin.cpp b/editor/plugins/animation_blend_tree_editor_plugin.cpp
index 19d5243776..205458fb1d 100644
--- a/editor/plugins/animation_blend_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_blend_tree_editor_plugin.cpp
@@ -131,10 +131,6 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 
 		Ref<AnimationNode> agnode = blend_tree->get_node(E->get());
 
-		if (!agnode->is_connected("changed", this, "_node_changed")) {
-			agnode->connect("changed", this, "_node_changed", varray(agnode->get_instance_id()), CONNECT_DEFERRED);
-		}
-
 		node->set_offset(blend_tree->get_node_position(E->get()) * EDSCALE);
 
 		node->set_title(agnode->get_caption());
@@ -721,14 +717,6 @@ void AnimationNodeBlendTreeEditor::_scroll_changed(const Vector2 &p_scroll) {
 	updating = false;
 }
 
-void AnimationNodeBlendTreeEditor::_node_changed(ObjectID p_node) {
-
-	AnimationNode *an = Object::cast_to<AnimationNode>(ObjectDB::get_instance(p_node));
-	//if (an && an->get_parent() == blend_tree) {
-	_update_graph();
-	//}
-}
-
 void AnimationNodeBlendTreeEditor::_bind_methods() {
 
 	ClassDB::bind_method("_update_graph", &AnimationNodeBlendTreeEditor::_update_graph);
@@ -746,7 +734,6 @@ void AnimationNodeBlendTreeEditor::_bind_methods() {
 	ClassDB::bind_method("_update_filters", &AnimationNodeBlendTreeEditor::_update_filters);
 	ClassDB::bind_method("_filter_edited", &AnimationNodeBlendTreeEditor::_filter_edited);
 	ClassDB::bind_method("_filter_toggled", &AnimationNodeBlendTreeEditor::_filter_toggled);
-	ClassDB::bind_method("_node_changed", &AnimationNodeBlendTreeEditor::_node_changed);
 	ClassDB::bind_method("_removed_from_graph", &AnimationNodeBlendTreeEditor::_removed_from_graph);
 	ClassDB::bind_method("_property_changed", &AnimationNodeBlendTreeEditor::_property_changed);
 	ClassDB::bind_method("_file_opened", &AnimationNodeBlendTreeEditor::_file_opened);
diff --git a/editor/plugins/animation_blend_tree_editor_plugin.h b/editor/plugins/animation_blend_tree_editor_plugin.h
index 9616e8b5da..e2daefdec6 100644
--- a/editor/plugins/animation_blend_tree_editor_plugin.h
+++ b/editor/plugins/animation_blend_tree_editor_plugin.h
@@ -104,8 +104,6 @@ class AnimationNodeBlendTreeEditor : public AnimationTreeNodeEditorPlugin {
 	void _filter_toggled();
 	Ref<AnimationNode> _filter_edit;
 
-	void _node_changed(ObjectID p_node);
-
 	void _property_changed(const StringName &p_property, const Variant &p_value);
 	void _removed_from_graph();
 
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index 46a6b85131..23babdf07b 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -1276,7 +1276,6 @@ void ScriptTextEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
 				word_at_mouse = tx->get_selection_text();
 
 			bool has_color = (word_at_mouse == "Color");
-			int fold_state = 0;
 			bool foldable = tx->can_fold(row) || tx->is_folded(row);
 			bool open_docs = false;
 			bool goto_definition = false;
diff --git a/main/main.cpp b/main/main.cpp
index dac646ba70..5320d73c7f 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -129,7 +129,6 @@ static bool init_always_on_top = false;
 static bool init_use_custom_pos = false;
 static Vector2 init_custom_pos;
 static bool force_lowdpi = false;
-static bool use_vsync = true;
 
 // Debug
 
diff --git a/modules/cvtt/image_compress_cvtt.cpp b/modules/cvtt/image_compress_cvtt.cpp
index 425d8db183..732b9cf733 100644
--- a/modules/cvtt/image_compress_cvtt.cpp
+++ b/modules/cvtt/image_compress_cvtt.cpp
@@ -228,8 +228,6 @@ void image_compress_cvtt(Image *p_image, float p_lossy_quality, Image::CompressS
 		uint8_t *out_bytes = &wb[dst_ofs];
 
 		for (int y_start = 0; y_start < h; y_start += 4) {
-			int y_end = y_start + 4;
-
 			CVTTCompressionRowTask row_task;
 			row_task.width = w;
 			row_task.height = h;
@@ -308,7 +306,6 @@ void image_decompress_cvtt(Image *p_image) {
 	int target_size = Image::get_image_data_size(w, h, target_format, p_image->has_mipmaps());
 	int mm_count = p_image->get_mipmap_count();
 	data.resize(target_size);
-	int shift = Image::get_format_pixel_rshift(target_format);
 
 	PoolVector<uint8_t>::Write wb = data.write();
 
diff --git a/modules/gdscript/gdscript_editor.cpp b/modules/gdscript/gdscript_editor.cpp
index a9b641de50..3194f19aa9 100644
--- a/modules/gdscript/gdscript_editor.cpp
+++ b/modules/gdscript/gdscript_editor.cpp
@@ -33,12 +33,9 @@
 #include "core/engine.h"
 #include "core/global_constants.h"
 #include "core/os/file_access.h"
-#include "editor/editor_settings.h"
 #include "gdscript_compiler.h"
 
 #ifdef TOOLS_ENABLED
-#include "core/engine.h"
-#include "core/reference.h"
 #include "editor/editor_file_system.h"
 #include "editor/editor_settings.h"
 #endif
diff --git a/modules/gridmap/grid_map.cpp b/modules/gridmap/grid_map.cpp
index a480c4183e..a8fdf8cf1f 100644
--- a/modules/gridmap/grid_map.cpp
+++ b/modules/gridmap/grid_map.cpp
@@ -29,37 +29,19 @@
 /*************************************************************************/
 
 #include "grid_map.h"
-#include "core/message_queue.h"
-#include "scene/3d/light.h"
-#include "scene/resources/surface_tool.h"
-#include "servers/visual_server.h"
 
 #include "core/io/marshalls.h"
-#include "core/os/os.h"
+#include "core/message_queue.h"
+#include "scene/3d/light.h"
 #include "scene/resources/mesh_library.h"
+#include "scene/resources/surface_tool.h"
 #include "scene/scene_string_names.h"
+#include "servers/visual_server.h"
 
 bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
 
 	String name = p_name;
 
-	/*	} else if (name=="cells") {
-		PoolVector<int> cells = p_value;
-		int amount=cells.size();
-		PoolVector<int>::Read r = cells.read();
-		ERR_FAIL_COND_V(amount&1,false); // not even
-		cell_map.clear();
-		for(int i=0;i<amount/3;i++) {
-
-
-			IndexKey ik;
-			ik.key=decode_uint64(&r[i*3]);
-			Cell cell;
-			cell.cell=uint32_t(r[i*+1]);
-			cell_map[ik]=cell;
-
-		}
-		_recreate_octant_data();*/
 	if (name == "data") {
 
 		Dictionary d = p_value;
@@ -80,7 +62,9 @@ bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
 				cell_map[ik] = cell;
 			}
 		}
+
 		_recreate_octant_data();
+
 	} else if (name == "baked_meshes") {
 
 		clear_baked_meshes();
@@ -103,8 +87,9 @@ bool GridMap::_set(const StringName &p_name, const Variant &p_value) {
 
 		_recreate_octant_data();
 
-	} else
+	} else {
 		return false;
+	}
 
 	return true;
 }
@@ -1081,8 +1066,6 @@ void GridMap::make_baked_meshes(bool p_gen_lightmap_uv, float p_lightmap_uv_texe
 		}
 	}
 
-	int ofs = 0;
-
 	for (Map<OctantKey, Map<Ref<Material>, Ref<SurfaceTool> > >::Element *E = surface_map.front(); E; E = E->next()) {
 
 		Ref<ArrayMesh> mesh;
diff --git a/modules/theora/video_stream_theora.cpp b/modules/theora/video_stream_theora.cpp
index d9677b505c..d72d74cf79 100644
--- a/modules/theora/video_stream_theora.cpp
+++ b/modules/theora/video_stream_theora.cpp
@@ -439,7 +439,7 @@ void VideoStreamPlaybackTheora::update(float p_delta) {
 					}
 				}
 
-				int tr = vorbis_synthesis_read(&vd, ret - to_read);
+				vorbis_synthesis_read(&vd, ret - to_read);
 
 				audio_frames_wrote += ret - to_read;
 
diff --git a/modules/visual_script/visual_script_editor.cpp b/modules/visual_script/visual_script_editor.cpp
index 4736556d6a..f4e7d9831a 100644
--- a/modules/visual_script/visual_script_editor.cpp
+++ b/modules/visual_script/visual_script_editor.cpp
@@ -2603,7 +2603,6 @@ void VisualScriptEditor::connect_data(Ref<VisualScriptNode> vnode_old, Ref<Visua
 	if (port >= value_count) {
 		port = 0;
 	}
-	int count = vnode_old->get_output_value_port_count() + vnode_old->get_output_sequence_port_count();
 	undo_redo->add_do_method(script.ptr(), "data_connect", edited_func, port_action_node, port, new_id, 0);
 	undo_redo->add_undo_method(script.ptr(), "data_disconnect", edited_func, port_action_node, port, new_id, 0);
 	undo_redo->commit_action();
@@ -2826,7 +2825,6 @@ void VisualScriptEditor::_selected_connect_node(const String &p_text, const Stri
 }
 
 void VisualScriptEditor::connect_seq(Ref<VisualScriptNode> vnode_old, Ref<VisualScriptNode> vnode_new, int new_id) {
-	int seq_count = vnode_old->get_output_sequence_port_count();
 	VisualScriptOperator *vnode_operator = Object::cast_to<VisualScriptOperator>(vnode_new.ptr());
 	if (vnode_operator != NULL && vnode_operator->has_input_sequence_port() == false) {
 		return;
@@ -2841,7 +2839,7 @@ void VisualScriptEditor::connect_seq(Ref<VisualScriptNode> vnode_old, Ref<Visual
 	if (vnode_new->has_input_sequence_port() == false) {
 		return;
 	}
-	VisualScriptFunction *vnode_function = Object::cast_to<VisualScriptFunction>(vnode_old.ptr());
+
 	undo_redo->create_action(TTR("Connect Node Sequence"));
 	int pass_port = -vnode_old->get_output_sequence_port_count() + 1;
 	int return_port = port_action_output - 1;
@@ -3367,11 +3365,6 @@ void VisualScriptEditor::_member_option(int p_option) {
 					undo_redo->add_undo_method(script.ptr(), "data_connect", name, E->get().from_node, E->get().from_port, E->get().to_node, E->get().to_port);
 				}
 
-				/*
-				for(int i=0;i<script->function_get_argument_count(name);i++) {
-					undo_redo->add_undo_method(script.ptr(),"function_add_argument",name,script->function_get_argument_name(name,i),script->function_get_argument_type(name,i));
-				}
-				*/
 				undo_redo->add_do_method(this, "_update_members");
 				undo_redo->add_undo_method(this, "_update_members");
 				undo_redo->add_do_method(this, "_update_graph");
diff --git a/modules/websocket/lws_peer.cpp b/modules/websocket/lws_peer.cpp
index 245b28b608..2f022bcfc9 100644
--- a/modules/websocket/lws_peer.cpp
+++ b/modules/websocket/lws_peer.cpp
@@ -30,6 +30,7 @@
 #ifndef JAVASCRIPT_ENABLED
 
 #include "lws_peer.h"
+
 #include "core/io/ip.h"
 
 // Needed for socket_helpers on Android at least. UNIXes has it, just include if not windows
@@ -60,7 +61,6 @@ Error LWSPeer::read_wsi(void *in, size_t len) {
 
 	ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
 
-	PeerData *peer_data = (PeerData *)(lws_wsi_user(wsi));
 	uint32_t size = in_size;
 	uint8_t is_string = lws_frame_is_binary(wsi) ? 0 : 1;
 
@@ -88,7 +88,6 @@ Error LWSPeer::write_wsi() {
 
 	ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
 
-	PeerData *peer_data = (PeerData *)(lws_wsi_user(wsi));
 	PoolVector<uint8_t> tmp;
 	int left = rbw.data_left();
 	uint32_t to_write = 0;
@@ -119,7 +118,6 @@ Error LWSPeer::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
 
 	ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
 
-	PeerData *peer_data = (PeerData *)lws_wsi_user(wsi);
 	rbw.write((uint8_t *)&p_buffer_size, 4);
 	rbw.write(p_buffer, MIN(p_buffer_size, rbw.space_left()));
 	out_count++;
@@ -132,8 +130,6 @@ Error LWSPeer::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
 
 	ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
 
-	PeerData *peer_data = (PeerData *)lws_wsi_user(wsi);
-
 	if (in_count == 0)
 		return ERR_UNAVAILABLE;
 
diff --git a/platform/android/export/export.cpp b/platform/android/export/export.cpp
index 4fba811cc2..e74693893d 100644
--- a/platform/android/export/export.cpp
+++ b/platform/android/export/export.cpp
@@ -760,7 +760,6 @@ class EditorExportAndroid : public EditorExportPlatform {
 						// save manifest ending so we can restore it
 						Vector<uint8_t> manifest_end;
 						uint32_t manifest_cur_size = p_manifest.size();
-						uint32_t node_size = size;
 
 						manifest_end.resize(p_manifest.size() - ofs);
 						memcpy(manifest_end.ptrw(), &p_manifest[ofs], manifest_end.size());
diff --git a/scene/gui/rich_text_label.cpp b/scene/gui/rich_text_label.cpp
index d8c312397d..b085280b96 100644
--- a/scene/gui/rich_text_label.cpp
+++ b/scene/gui/rich_text_label.cpp
@@ -847,8 +847,6 @@ void RichTextLabel::_notification(int p_what) {
 			bool use_outline = get_constant("shadow_as_outline");
 			Point2 shadow_ofs(get_constant("shadow_offset_x"), get_constant("shadow_offset_y"));
 
-			float x_ofs = 0;
-
 			visible_line_count = 0;
 			while (y < size.height && from_line < main->lines.size()) {
 
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index a9566d9387..e9ac2ab793 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -650,8 +650,6 @@ void TextEdit::_notification(int p_what) {
 
 			int visible_rows = get_visible_rows() + 1;
 
-			int tab_w = cache.font->get_char_size(' ').width * indent_size;
-
 			Color color = cache.font_color;
 			color.a *= readonly_alpha;
 
diff --git a/scene/resources/bit_mask.cpp b/scene/resources/bit_mask.cpp
index d670161afd..56b236d03b 100644
--- a/scene/resources/bit_mask.cpp
+++ b/scene/resources/bit_mask.cpp
@@ -183,7 +183,6 @@ Vector<Vector2> BitMap::_march_square(const Rect2i &rect, const Point2i &start)
 	unsigned int count = 0;
 	Set<Point2i> case9s;
 	Set<Point2i> case6s;
-	int i;
 	Vector<Vector2> _points;
 	do {
 		int sv = 0;
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index 6426689397..fa87623e38 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -546,19 +546,6 @@ void Mesh::clear_cache() const {
 Mesh::Mesh() {
 }
 
-static const char *_array_name[] = {
-	"vertex_array",
-	"normal_array",
-	"tangent_array",
-	"color_array",
-	"tex_uv_array",
-	"tex_uv2_array",
-	"bone_array",
-	"weights_array",
-	"index_array",
-	NULL
-};
-
 static const ArrayMesh::ArrayType _array_types[] = {
 
 	ArrayMesh::ARRAY_VERTEX,
diff --git a/servers/audio/audio_rb_resampler.cpp b/servers/audio/audio_rb_resampler.cpp
index 38c00f6106..84a87de2e2 100644
--- a/servers/audio/audio_rb_resampler.cpp
+++ b/servers/audio/audio_rb_resampler.cpp
@@ -82,19 +82,28 @@ uint32_t AudioRBResampler::_resample(AudioFrame *p_dest, int p_todo, int32_t p_i
 		// For now, channels higher than stereo are almost ignored
 		if (C == 4) {
 
+			// FIXME: v2 and v3 are not being used (thus were commented out to prevent
+			// compilation warnings, but they should likely be uncommented *and* used).
+			// See also C == 6 with similar issues.
 			float v0 = rb[(pos << 2) + 0];
 			float v1 = rb[(pos << 2) + 1];
+			/*
 			float v2 = rb[(pos << 2) + 2];
 			float v3 = rb[(pos << 2) + 3];
+			*/
 			float v0n = rb[(pos_next << 2) + 0];
 			float v1n = rb[(pos_next << 2) + 1];
+			/*
 			float v2n = rb[(pos_next << 2) + 2];
 			float v3n = rb[(pos_next << 2) + 3];
+			*/
 
 			v0 += (v0n - v0) * frac;
 			v1 += (v1n - v1) * frac;
+			/*
 			v2 += (v2n - v2) * frac;
 			v3 += (v3n - v3) * frac;
+			*/
 			p_dest[i] = AudioFrame(v0, v1);
 		}
 
@@ -104,6 +113,7 @@ uint32_t AudioRBResampler::_resample(AudioFrame *p_dest, int p_todo, int32_t p_i
 			// should be done as for C == 2 (C == 4 also has some unused assignments).
 			float v0 = rb[(pos * 6) + 0];
 			float v1 = rb[(pos * 6) + 1];
+			/*
 			float v2 = rb[(pos * 6) + 2];
 			float v3 = rb[(pos * 6) + 3];
 			float v4 = rb[(pos * 6) + 4];
@@ -114,6 +124,7 @@ uint32_t AudioRBResampler::_resample(AudioFrame *p_dest, int p_todo, int32_t p_i
 			float v3n = rb[(pos_next * 6) + 3];
 			float v4n = rb[(pos_next * 6) + 4];
 			float v5n = rb[(pos_next * 6) + 5];
+			*/
 
 			p_dest[i] = AudioFrame(v0, v1);
 		}
diff --git a/servers/visual/default_mouse_cursor.xpm b/servers/visual/default_mouse_cursor.xpm
deleted file mode 100644
index 37d437dd15..0000000000
--- a/servers/visual/default_mouse_cursor.xpm
+++ /dev/null
@@ -1,23 +0,0 @@
-/* XPM */
-static const char * default_mouse_cursor_xpm[] = {
-"16 16 4 1",
-" 	c None",
-".	c #000000",
-"+	c #FF00FF",
-"@	c #FFFFFF",
-"...+++++++++++++",
-".@...+++++++++++",
-".@@@...+++++++++",
-".@@@@@....++++++",
-".@@@@@@@@...++++",
-".@@@@@@@@@@...++",
-".@@@@@@@@@@@@..+",
-".@@@@@@@@@@@@@..",
-".@@@@@@@@@@@@..+",
-".@@@@@@@@@@@..++",
-".@@@@@@@@@...+++",
-".@@@.....@@..+++",
-".....+++.@@@..++",
-"++++++++..@@@..+",
-"+++++++++..@@@.+",
-"++++++++++.....+"};
diff --git a/servers/visual/visual_server_raster.cpp b/servers/visual/visual_server_raster.cpp
index ea63ae5013..6e41197e21 100644
--- a/servers/visual/visual_server_raster.cpp
+++ b/servers/visual/visual_server_raster.cpp
@@ -34,7 +34,6 @@
 #include "core/os/os.h"
 #include "core/project_settings.h"
 #include "core/sort.h"
-#include "default_mouse_cursor.xpm"
 #include "visual_server_canvas.h"
 #include "visual_server_global.h"
 #include "visual_server_scene.h"