(98a962701) Close the save/load dialogs when leaving the sub editor. Otherwise they'll still be visible when re-entering the editor, and saving at that point will overwrite the previously loaded sub with an empty one. Closes #1357

Barotrauma/BarotraumaClient/Source/Screens/SubEditorScreen.cs

@@ -564,6 +564,9 @@ namespace Barotrauma
 
             MapEntityPrefab.Selected = null;
 
+            saveFrame = null;
+            loadFrame = null;
+
             MapEntity.DeselectAll();
             MapEntity.SelectionGroups.Clear();