Merge "Null check." into nyc-dev

src/com/android/settings/datausage/AppDataUsage.java

@@ -302,8 +302,11 @@ public class AppDataUsage extends DataUsageBase implements Preference.OnPreferen
     }
 
     private boolean getUnrestrictData() {
+        if (mDataSaverBackend != null) {
             return mDataSaverBackend.isWhitelisted(mAppItem.key);
         }
+        return false;
+    }
 
     @Override
     public void onViewCreated(View view, Bundle savedInstanceState) {