Merge "frameworks/base: Fix to release references to previous live wallpaper"

Author: Dianne Hackborn

services/java/com/android/server/WallpaperManagerService.java

@@ -587,6 +587,8 @@ void clearWallpaperComponentLocked() {
                 mIWindowManager.removeWindowToken(mWallpaperConnection.mToken);
             } catch (RemoteException e) {
             }
+            mWallpaperConnection.mService = null;
+            mWallpaperConnection.mEngine = null;
             mWallpaperConnection = null;
         }
     }