message: Remove racey condition
  joining might become false before we get the room down the sync
diff: @@ -617,7 +617,7 @@ module.exports = React.createClass({
  },
  onRoom: function(room) {
  - if (!room || room.roomId !== this.state.roomId || !this.state.joining) {
  + if (!room || room.roomId !== this.state.roomId) {
  return;
  }
  this.setState({
  