Fix memory Leak due to SurfaceView not being detached.

Change-Id: If3f3577eaaa33e4043e8a5e6417f663bcaaf6fbb
diff --git a/src/com/android/launcher2/AllApps3D.java b/src/com/android/launcher2/AllApps3D.java
index b8aa8ec..376b1fe 100644
--- a/src/com/android/launcher2/AllApps3D.java
+++ b/src/com/android/launcher2/AllApps3D.java
@@ -213,6 +213,7 @@
             destroyRenderScript();
             sRS = null;
             sRollo = null;
+            super.onDetachedFromWindow();
         }
     }