message: Fix appearance settings crash
diff: @@ -1166,7 +1166,7 @@ export default class EventTile extends React.Component<IProps, IState> {
  || this.state.actionBarFocused);
  const room = MatrixClientPeg.get().getRoom(this.props.mxEvent.getRoomId());
  - const thread = room.findThreadForEvent?.(this.props.mxEvent);
  + const thread = room?.findThreadForEvent?.(this.props.mxEvent);
  // Thread panel shows the timestamp of the last reply in that thread
  const ts = this.props.tileShape !== TileShape.ThreadPanel
  