message: Remove superfluous WindowStack update in MapViewState::onMouseDown()
diff: @@ -521,14 +521,13 @@ void MapViewState::onMouseDown(EventHandler::MouseButton button, int /*x*/, int
  {
  mLeftButtonDown = true;
  - mWindowStack.updateStack(MOUSE_COORDS);
  Point<int> pt = mTileMap->mapViewLocation();
  - // Ugly
  if (MENU_ICON.contains(MOUSE_COORDS))
  {
  mGameOptionsDialog.show();
  resetUi();
  + return;
  }
  if (RESOURCE_PANEL_PIN.contains(MOUSE_COORDS)) { mPinResourcePanel = !mPinResourcePanel; }
  