message: No need to dispatch, just call setMxId
diff: @@ -703,7 +703,7 @@ module.exports = React.createClass({
  _createChat: function() {
  if (MatrixClientPeg.get().isGuest()) {
  - dis.dispatch({action: 'view_set_mxid'});
  + this._setMxId();
  return;
  }
  const ChatInviteDialog = sdk.getComponent("dialogs.ChatInviteDialog");
  