Fix crash on group context menu

vlc-android/src/org/videolan/vlc/gui/video/VideoGridFragment.java

@@ -342,9 +342,11 @@ public class VideoGridFragment extends MediaBrowserFragment implements ISortable
             return;
         MenuInflater inflater = getActivity().getMenuInflater();
         inflater.inflate(media instanceof MediaGroup ? R.menu.video_group_contextual : R.menu.video_list, menu);
-        if (media instanceof MediaGroup && !AndroidUtil.isHoneycombOrLater()) {
-            menu.findItem(R.id.video_list_append).setVisible(false);
-            menu.findItem(R.id.video_group_play).setVisible(false);
+        if (media instanceof MediaGroup) {
+            if (!AndroidUtil.isHoneycombOrLater()) {
+                menu.findItem(R.id.video_list_append).setVisible(false);
+                menu.findItem(R.id.video_group_play).setVisible(false);
+            }
         } else
             setContextMenuItems(menu, media);
     }