[Qt] make use of the nMinimumTotalFee (absolute) in coincontrols fee calculation

src/qt/coincontroldialog.cpp

@@ -549,6 +549,9 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
 
         // Fee
         nPayFee = CWallet::GetMinimumFee(nBytes, nTxConfirmTarget, mempool);
+        if (nPayFee > 0 && coinControl->nMinimumTotalFee > nPayFee)
+            nPayFee = coinControl->nMinimumTotalFee;
+
 
         // Allow free? (require at least hard-coded threshold and default to that if no estimate)
         double dPriorityNeeded = std::max(mempoolEstimatePriority, AllowFreeThreshold());