Fix bug: App crahes after accessing a folder with gridview and then not

src/com/owncloud/android/ui/fragment/ExtendedListFragment.java

@@ -396,8 +396,8 @@ implements OnItemClickListener, OnEnforceableRefreshListener {
             mListFooterView.invalidate();
 
         } else {
-            mGridView.removeFooterView(mGridFooterView);
-            mListView.removeFooterView(mListFooterView);
+//            mGridView.removeFooterView(mGridFooterView);
+//            mListView.removeFooterView(mListFooterView);
         }
     }