message: fix sticky headers on resize
diff: @@ -606,7 +606,7 @@ module.exports = React.createClass({
  return (
  <GeminiScrollbar className="mx_RoomList_scrollbar"
  - autoshow={true} onScroll={ self._whenScrolling } ref="gemscroll">
  + autoshow={true} onScroll={ self._whenScrolling } onResize={ self._whenScrolling } ref="gemscroll">
  <div className="mx_RoomList" onMouseOver={ this._onMouseOver }>
  <RoomSubList list={ self.state.lists['im.vector.fake.invite'] }
  label="Invites"
  