message: Don't try and show context menus if we don't have one
  Fixes
diff: @@ -119,6 +119,10 @@ export default class RoomTile2 extends React.Component<IProps, IState> {
  ActiveRoomObserver.addListener(this.props.room.roomId, this.onActiveRoomUpdate);
  }
  + private get showContextMenu(): boolean {
  + return !this.props.isMinimized && this.props.tag !== DefaultTagID.Invite;
  + }
  +
  public componentWillUnmount() {
  if (this.props.room) {
  ActiveRoomObserver.removeListener(this.props.room.roomId, this.onActiveRoomUpdate);
  @@ -170,6 +174,9 @@ export default class RoomTile2 extends React.Component<IProps, IState> {
  };
  private onContextMenu = (ev: React.MouseEvent) => {
  + // If we don't have a context menu to show, ignore the action.
  + if (!this.showContextMenu) return;
  +
  ev.preventDefault();
  ev.stopPropagation();
  this.setState({
  @@ -239,7 +246,7 @@ export default class RoomTile2 extends React.Component<IProps, IState> {
  private onClickMute = ev => this.saveNotifState(ev, MUTE);
  private renderNotificationsMenu(): React.ReactElement {
  - if (this.props.isMinimized || MatrixClientPeg.get().isGuest() || this.props.tag === DefaultTagID.Invite) {
  + if (MatrixClientPeg.get().isGuest() || !this.showContextMenu) {
  // the menu makes no sense in these cases so do not show one
  return null;
  }
  @@ -306,12 +313,9 @@ export default class RoomTile2 extends React.Component<IProps, IState> {
  }
  private renderGeneralMenu(): React.ReactElement {
  - if (this.props.isMinimized) return null; // no menu when minimized
  + if (!this.showContextMenu) return null; // no menu to show
  - // TODO: Get a proper invite context menu, or take invites out of the room list.
  - if (this.props.tag === DefaultTagID.Invite) {
  - return null;
  - }
  + // TODO: We could do with a proper invite context menu, unlike what showContextMenu suggests
  let contextMenu = null;
  if (this.state.generalMenuPosition) {
  