Fix unused variable warnings

The forth in my quest to make Godot 3.x compile with -Werror on GCC7

10 files changed, 13 insertions, 41 deletions

diff --git a/editor/editor_export.cpp b/editor/editor_export.cpp
index 915fb7e5db..8623b9acdb 100644
--- a/editor/editor_export.cpp
+++ b/editor/editor_export.cpp
@@ -697,6 +697,8 @@ Error EditorExportPlatform::save_zip(const Ref<EditorExportPreset> &p_preset, co
 	zd.zip = zip;
 
 	Error err = export_project_files(p_preset, _save_zip_file, &zd);
+	if (err != OK)
+		ERR_PRINT("Failed to export project files");
 
 	zipClose(zip, NULL);
 
diff --git a/editor/editor_node.cpp b/editor/editor_node.cpp
index 91d2ddcd19..b4412014e7 100644
--- a/editor/editor_node.cpp
+++ b/editor/editor_node.cpp
@@ -412,7 +412,6 @@ void EditorNode::_fs_changed() {
 		}
 
 		if (changed.size()) {
-			int idx = 0;
 			for (List<Ref<Resource> >::Element *E = changed.front(); E; E = E->next()) {
 				E->get()->reload_from_file();
 			}
@@ -1997,6 +1996,8 @@ void EditorNode::_menu_option_confirm(int p_option, bool p_confirmed) {
 			int cur_idx = editor_data.get_edited_scene();
 			_remove_edited_scene();
 			Error err = load_scene(filename);
+			if (err != OK)
+				ERR_PRINT("Failed to load scene");
 			editor_data.move_edited_scene_to_index(cur_idx);
 			get_undo_redo()->clear_history();
 			scene_tabs->set_current_tab(cur_idx);
@@ -3607,13 +3608,6 @@ void EditorNode::_update_dock_slots_visibility() {
 		right_r_vsplit,
 	};
 
-	HSplitContainer *h_splits[4] = {
-		left_l_hsplit,
-		left_r_hsplit,
-		main_hsplit,
-		right_hsplit,
-	};
-
 	if (!docks_visible) {
 
 		for (int i = 0; i < DOCK_SLOT_MAX; i++) {
diff --git a/editor/import/editor_scene_importer_gltf.cpp b/editor/import/editor_scene_importer_gltf.cpp
index 21cf08f524..831eb74b66 100644
--- a/editor/import/editor_scene_importer_gltf.cpp
+++ b/editor/import/editor_scene_importer_gltf.cpp
@@ -55,8 +55,8 @@ Error EditorSceneImporterGLTF::_parse_glb(const String &p_path, GLTFState &state
 
 	uint32_t magic = f->get_32();
 	ERR_FAIL_COND_V(magic != 0x46546C67, ERR_FILE_UNRECOGNIZED); //glTF
-	uint32_t version = f->get_32();
-	uint32_t length = f->get_32();
+	f->get_32(); // version
+	f->get_32(); // length
 
 	uint32_t chunk_length = f->get_32();
 	uint32_t chunk_type = f->get_32();
@@ -1945,7 +1945,7 @@ void EditorSceneImporterGLTF::_import_animation(GLTFState &state, AnimationPlaye
 				bool last = false;
 				while (true) {
 
-					float value = _interpolate_track<float>(track.weight_tracks[i].times, track.weight_tracks[i].values, time, track.weight_tracks[i].interpolation);
+					_interpolate_track<float>(track.weight_tracks[i].times, track.weight_tracks[i].values, time, track.weight_tracks[i].interpolation);
 					if (last) {
 						break;
 					}
diff --git a/editor/import/resource_importer_wav.cpp b/editor/import/resource_importer_wav.cpp
index e2bacd70e4..025dbbaacf 100644
--- a/editor/import/resource_importer_wav.cpp
+++ b/editor/import/resource_importer_wav.cpp
@@ -103,7 +103,7 @@ Error ResourceImporterWAV::import(const String &p_source_file, const String &p_s
 	}
 
 	/* GET FILESIZE */
-	uint32_t filesize = file->get_32();
+	file->get_32(); // filesize
 
 	/* CHECK WAVE */
 
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index fae57eb5d2..2192d3ac49 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -624,7 +624,7 @@ void ScriptTextEditor::_code_complete_script(const String &p_code, List<String>
 	}
 	String hint;
 	Error err = script->get_language()->complete_code(p_code, script->get_path().get_base_dir(), base, r_options, r_force, hint);
-	if (hint != "") {
+	if (err == OK && hint != "") {
 		code_editor->get_text_edit()->set_code_hint(hint);
 	}
 }
diff --git a/editor/plugins/shader_editor_plugin.cpp b/editor/plugins/shader_editor_plugin.cpp
index b02016c273..1b02f18d85 100644
--- a/editor/plugins/shader_editor_plugin.cpp
+++ b/editor/plugins/shader_editor_plugin.cpp
@@ -164,6 +164,8 @@ void ShaderTextEditor::_code_complete_script(const String &p_code, List<String>
 	String calltip;
 
 	Error err = sl.complete(p_code, ShaderTypes::get_singleton()->get_functions(VisualServer::ShaderMode(shader->get_mode())), ShaderTypes::get_singleton()->get_modes(VisualServer::ShaderMode(shader->get_mode())), ShaderTypes::get_singleton()->get_types(), r_options, calltip);
+	if (err != OK)
+		ERR_PRINT("Shaderlang complete failed");
 
 	if (calltip != "") {
 		get_text_edit()->set_code_hint(calltip);
@@ -403,13 +405,7 @@ void ShaderEditorPlugin::edit(Object *p_object) {
 
 bool ShaderEditorPlugin::handles(Object *p_object) const {
 
-	bool handles = true;
 	Shader *shader = Object::cast_to<Shader>(p_object);
-	/*
-	if (Object::cast_to<ShaderGraph>(shader)) // Don't handle ShaderGraph's
-		handles = false;
-	*/
-
 	return shader != NULL;
 }
 
diff --git a/editor/plugins/spatial_editor_plugin.cpp b/editor/plugins/spatial_editor_plugin.cpp
index 4e722be44b..235700a3c3 100644
--- a/editor/plugins/spatial_editor_plugin.cpp
+++ b/editor/plugins/spatial_editor_plugin.cpp
@@ -2528,7 +2528,6 @@ Vector3 SpatialEditorViewport::_get_instance_position(const Point2 &p_pos) const
 
 		found_gizmos.insert(seg);
 
-		int handle = -1;
 		Vector3 hit_point;
 		Vector3 hit_normal;
 		bool inters = seg->intersect_ray(camera, p_pos, hit_point, hit_normal, NULL, false);
@@ -3423,13 +3422,6 @@ void SpatialEditor::set_state(const Dictionary &p_state) {
 		settings_znear->set_value(float(d["znear"]));
 	if (d.has("fov"))
 		settings_fov->set_value(float(d["fov"]));
-
-	if (d.has("default_srgb")) {
-		bool use = d["default_srgb"];
-
-		//viewport_environment->set_enable_fx(Environment::FX_SRGB,use);
-		//view_menu->get_popup()->set_item_checked( view_menu->get_popup()->get_item_index(MENU_VIEW_USE_DEFAULT_SRGB), use );
-	}
 	if (d.has("show_grid")) {
 		bool use = d["show_grid"];
 
diff --git a/editor/plugins/tile_map_editor_plugin.cpp b/editor/plugins/tile_map_editor_plugin.cpp
index f943ee5f6d..43856116a6 100644
--- a/editor/plugins/tile_map_editor_plugin.cpp
+++ b/editor/plugins/tile_map_editor_plugin.cpp
@@ -550,7 +550,6 @@ void TileMapEditor::_draw_fill_preview(int p_cell, const Point2i &p_point, bool
 	PoolVector<Vector2> points = _bucket_fill(p_point, false, true);
 	PoolVector<Vector2>::Read pr = points.read();
 	int len = points.size();
-	int time_after = OS::get_singleton()->get_ticks_msec();
 
 	for (int i = 0; i < len; ++i) {
 		_draw_cell(p_cell, pr[i], p_flip_h, p_flip_v, p_transpose, p_xform);
diff --git a/editor/project_export.cpp b/editor/project_export.cpp
index d649afc594..a47ad13700 100644
--- a/editor/project_export.cpp
+++ b/editor/project_export.cpp
@@ -732,6 +732,8 @@ void ProjectExportDialog::_export_project_to_path(const String &p_path) {
 	ERR_FAIL_COND(platform.is_null());
 
 	Error err = platform->export_project(current, export_debug->is_pressed(), p_path, 0);
+	if (err != OK)
+		ERR_PRINT("Failed to export project");
 }
 
 void ProjectExportDialog::_bind_methods() {
diff --git a/editor/property_editor.cpp b/editor/property_editor.cpp
index a42fb41ee2..c7a4e1fc3b 100644
--- a/editor/property_editor.cpp
+++ b/editor/property_editor.cpp
@@ -2275,19 +2275,6 @@ void PropertyEditor::_check_reload_status(const String &p_name, TreeItem *item)
 		}
 	}
 
-	if (_might_be_in_instance()) {
-
-		Variant vorig;
-		Dictionary d = item->get_metadata(0);
-		int usage = d.has("usage") ? int(int(d["usage"]) & (PROPERTY_USAGE_STORE_IF_NONONE | PROPERTY_USAGE_STORE_IF_NONZERO)) : 0;
-
-		if (_get_instanced_node_original_property(p_name, vorig) || usage) {
-			Variant v = obj->get(p_name);
-
-			bool has_reload = _is_property_different(v, vorig, usage);
-		}
-	}
-
 	if (obj->call("property_can_revert", p_name).operator bool()) {
 
 		has_reload = true;