Mine

  void OnComplete(int error, const AddressList& addrlist) {
    if (error == OK)
      addresses_->SetFrom(addrlist, port());
    CompletionCallback* callback = callback_;
    MarkAsCancelled();
    callback->Run(error);
  }



  void OnComplete(int error, const AddressList& addrlist) {
    if (error == OK)
      addresses_->SetFrom(addrlist, port());
    MarkAsCancelled();
    callback_->Run(error);
  }