message: [Bug][GUI] Send: Deactivate btnChangeAddress only when addr is not set
diff: @@ -601,10 +601,12 @@ void SendWidget::onChangeAddressClicked()
  ui->btnChangeAddress->setActive(true);
  } else {
  inform(tr("Invalid change address"));
  - ui->btnChangeAddress->setActive(false);
  }
  }
  }
  + // check if changeAddress has been reset to NoDestination (or wasn't set at all)
  + if (boost::get<CNoDestination>(&CoinControlDialog::coinControl->destChange))
  + ui->btnChangeAddress->setActive(false);
  dialog->deleteLater();
  }
  