am 5b5ed310: Merge "Prevent crash in app memory updater." into mnc-dev

* commit '5b5ed310d4eaf5f1c74594ada81a148d4f67f4c0':
  Prevent crash in app memory updater.

src/com/android/settings/applications/InstalledAppDetails.java

@@ -836,6 +836,9 @@ public class InstalledAppDetails extends AppInfoBase
 
         @Override
         protected ProcStatsPackageEntry doInBackground(Void... params) {
+            if (getActivity() == null) {
+                return null;
+            }
             if (mPackageInfo == null) {
                 return null;
             }