message: nullguard SenderProfile,broke when NotifPanel had evs from forgotten rooms
diff: @@ -72,14 +72,12 @@ export default React.createClass({
  _updateRelatedGroups() {
  if (this.unmounted) return;
  - const relatedGroupsEvent = this.context.matrixClient
  - .getRoom(this.props.mxEvent.getRoomId())
  - .currentState
  - .getStateEvents('m.room.related_groups', '');
  + const room = this.context.matrixClient.getRoom(this.props.mxEvent.getRoomId())
  + if (!room) return;
  +
  + const relatedGroupsEvent = room.currentState.getStateEvents('m.room.related_groups', '');
  this.setState({
  - relatedGroups: relatedGroupsEvent ?
  - relatedGroupsEvent.getContent().groups || []
  - : [],
  + relatedGroups: relatedGroupsEvent ? relatedGroupsEvent.getContent().groups || [] : [],
  });
  },
  