Merge "Null check." into nyc-dev

am: fc1bb74186

* commit 'fc1bb74186c61712041dfa25e446391f7d8904a1':
  Null check.

Change-Id: Idbcee7bd10b0f530c7d48760e93cd3f8be3448b5

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

@@ -302,7 +302,10 @@ public class AppDataUsage extends DataUsageBase implements Preference.OnPreferen
     }
 
     private boolean getUnrestrictData() {
-        return mDataSaverBackend.isWhitelisted(mAppItem.key);
+        if (mDataSaverBackend != null) {
+            return mDataSaverBackend.isWhitelisted(mAppItem.key);
+        }
+        return false;
     }
 
     @Override