Moved contentUpdate receiver in try-block

src/de/danoeh/antennapod/fragment/ItemlistFragment.java

@@ -119,8 +119,12 @@ public class ItemlistFragment extends SherlockListFragment implements
 	@Override
 	public void onDestroy() {
 		super.onDestroy();
+		try {
 			getActivity().unregisterReceiver(contentUpdate);
-
+		} catch (IllegalArgumentException e) {
+			Log.w(TAG,
+					"IllegalArgumentException when trying to unregister contentUpdate receiver.");
+		}
 	}
 
 	@Override