message: fix for ref refactor pr
diff: @@ -1136,7 +1136,7 @@ const TimelinePanel = createReactClass({
  const allowPartial = opts.allowPartial || false;
  const messagePanel = this._messagePanel.current;
  - if (messagePanel === undefined) return null;
  + if (!messagePanel) return null;
  const EventTile = sdk.getComponent('rooms.EventTile');
  