Merge pull request #72074 from katemonster33/imgui_draw_debug_error_c…

…rash

Fixing an imgui-related crash related to debug errors

src/ui_manager.cpp

@@ -21,6 +21,9 @@
 
 using ui_stack_t = std::vector<std::reference_wrapper<ui_adaptor>>;
 
+#if !defined(__ANDROID__)
+static bool imgui_frame_started = false;
+#endif
 static bool redraw_in_progress = false;
 static bool showing_debug_message = false;
 static bool restart_redrawing = false;
@@ -341,7 +344,11 @@ void ui_adaptor::redraw_invalidated( )
         return;
     }
 #if !defined(__ANDROID__)
-    imclient->new_frame();
+    // This boolean is needed when a debug error is thrown inside redraw_invalidated
+    if( !imgui_frame_started ) {
+        imclient->new_frame();
+    }
+    imgui_frame_started = true;
 #endif
 
     restore_on_out_of_scope<bool> prev_redraw_in_progress( redraw_in_progress );
@@ -450,6 +457,7 @@ void ui_adaptor::redraw_invalidated( )
 
 #if !defined(__ANDROID__)
     imclient->end_frame();
+    imgui_frame_started = false;
 #endif
 }