message: Correctly bail out on unknown address
diff: @@ -405,6 +405,8 @@ module.exports = React.createClass({
  isKnown: false,
  };
  if (addrType == null) {
  + this.setState({ error: true });
  + return null;
  } else if (addrType == 'mx') {
  const user = MatrixClientPeg.get().getUser(addrObj.address);
  if (user) {
  