Fix various valgrind reported uninitialized variable uses

3 files changed, 5 insertions, 0 deletions

diff --git a/scene/gui/tabs.cpp b/scene/gui/tabs.cpp
index f0e89877cd..dee32aef7a 100644
--- a/scene/gui/tabs.cpp
+++ b/scene/gui/tabs.cpp
@@ -882,4 +882,6 @@ Tabs::Tabs() {
 
 	min_width = 0;
 	scrolling_enabled = true;
+	buttons_visible = false;
+	hover = -1;
 }
diff --git a/scene/gui/tree.cpp b/scene/gui/tree.cpp
index cdbdc9b0d7..b8fd2ce16e 100644
--- a/scene/gui/tree.cpp
+++ b/scene/gui/tree.cpp
@@ -3911,6 +3911,8 @@ Tree::Tree() {
 	cache.click_id = -1;
 	cache.click_item = NULL;
 	cache.click_column = 0;
+	cache.hover_cell = -1;
+	cache.hover_index = -1;
 	last_keypress = 0;
 	focus_in_id = 0;
 
diff --git a/scene/main/viewport.cpp b/scene/main/viewport.cpp
index 1ff1f4b6d8..f717f7509a 100644
--- a/scene/main/viewport.cpp
+++ b/scene/main/viewport.cpp
@@ -2789,6 +2789,7 @@ Viewport::Viewport() {
 	gui.drag_preview = NULL;
 	gui.drag_attempted = false;
 	gui.canvas_sort_index = 0;
+	gui.roots_order_dirty = false;
 
 	msaa = MSAA_DISABLED;
 	hdr = true;