Fix crash when saving root node by "Save Branch as Scene" with unsaved scene

Fix #7667

(cherry picked from commit 43a2599801be348dfd41d928c7a66a590dbe8745)

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/editor/scene_tree_dock.cpp b/tools/editor/scene_tree_dock.cpp
index ea1de29d0f..ae7a80377d 100644
--- a/tools/editor/scene_tree_dock.cpp
+++ b/tools/editor/scene_tree_dock.cpp
@@ -649,6 +649,13 @@ void SceneTreeDock::_tool_selected(int p_tool, bool p_confirm_override) {
 
 			Node *tocopy = selection.front()->get();
 
+			if (tocopy==scene){
+				accept->get_ok()->set_text(TTR("I see.."));
+				accept->set_text(TTR("Can not perform with the root node."));
+				accept->popup_centered_minsize();
+				break;
+			}
+
 			if (tocopy!=editor_data->get_edited_scene_root() && tocopy->get_filename()!="") {
 				accept->get_ok()->set_text(TTR("I see.."));
 				accept->set_text(TTR("This operation can't be done on instanced scenes."));