message: [GUI] sendConfirm dialog, labelWarning invisible if it's not set.
diff: @@ -52,6 +52,8 @@ TxDetailDialog::TxDetailDialog(QWidget *parent, bool isConfirmDialog, QString wa
  if (!warningStr.isEmpty()) {
  ui->labelWarning->setVisible(true);
  ui->labelWarning->setText(warningStr);
  + } else {
  + ui->labelWarning->setVisible(false);
  }
  // hide change address for now
  