message: Make sure the screen is set, otherwise ignore screenAfterLogin
diff: @@ -724,7 +724,7 @@ module.exports = React.createClass({
  // If screenAfterLogin is set, use that, then null it so that a second login will
  // result in view_home_page, _user_settings or _room_directory
  - if (this.state.screenAfterLogin) {
  + if (this.state.screenAfterLogin && this.state.screenAfterLogin.screen) {
  this.showScreen(
  this.state.screenAfterLogin.screen,
  this.state.screenAfterLogin.params
  