Fix BackdropFrameRenderer leak

am: b2005a0

* commit 'b2005a02170b0a5bc8518514c8a871c5fc526e09':
  Fix BackdropFrameRenderer leak

Change-Id: I4ac669491a6c73de61f5518beec77bd2160b72d3

core/java/com/android/internal/policy/DecorView.java

@@ -1458,6 +1458,8 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
             st.menu.close();
         }
 
+        releaseThreadedRenderer();
+
         if (mWindowResizeCallbacksAdded) {
             getViewRootImpl().removeWindowCallbacks(this);
             mWindowResizeCallbacksAdded = false;