message: [Cleanup] Remove extra calls to getDisplayUnit in ColdStakingWidget
diff: @@ -456,8 +456,7 @@ void ColdStakingWidget::onSendClicked(){
  this,
  prepareStatus,
  walletModel,
  - BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(),
  - currentTransaction.getTransactionFee()),
  + BitcoinUnits::formatWithUnit(nDisplayUnit, currentTransaction.getTransactionFee()),
  true
  );
  @@ -468,7 +467,7 @@ void ColdStakingWidget::onSendClicked(){
  showHideOp(true);
  TxDetailDialog* dialog = new TxDetailDialog(window);
  - dialog->setDisplayUnit(walletModel->getOptionsModel()->getDisplayUnit());
  + dialog->setDisplayUnit(nDisplayUnit);
  dialog->setData(walletModel, currentTransaction);
  dialog->adjustSize();
  openDialogWithOpaqueBackgroundY(dialog, window, 3, 5);
  