Restore the previous key focus widget after playing video

apps/openmw/mwgui/windowmanagerimp.cpp

@@ -1743,6 +1743,7 @@ namespace MWGui
         MyGUI::IntSize screenSize = MyGUI::RenderManager::getInstance().getViewSize();
         sizeVideo(screenSize.width, screenSize.height);
 
+        MyGUI::Widget* oldKeyFocus = MyGUI::InputManager::getInstance().getKeyFocusWidget();
         setKeyFocusWidget(mVideoWidget);
 
         mVideoBackground->setVisible(true);
@@ -1770,6 +1771,8 @@ namespace MWGui
 
         MWBase::Environment::get().getSoundManager()->resumeSounds();
 
+        setKeyFocusWidget(oldKeyFocus);
+
         setCursorVisible(cursorWasVisible);
 
         // Restore normal rendering