sendcoinsentry: small clear() and setValue() changes

- clear(): clear all UI elements (for secure and insecure payments)
- setValue(): only modify UI elements, which need to be set (for secure
  or insecure payments)

src/qt/sendcoinsentry.cpp

@@ -85,10 +85,17 @@ void SendCoinsEntry::setRemoveEnabled(bool enabled)
 
 void SendCoinsEntry::clear()
 {
+    // clear UI elements for insecure payments
     ui->payTo->clear();
     ui->addAsLabel->clear();
     ui->payAmount->clear();
+    // and the ones for secure payments just to be sure
+    ui->payTo_s->clear();
+    ui->memoTextLabel_s->clear();
+    ui->payAmount_s->clear();
+
     ui->payTo->setFocus();
+
     // update the display unit, to not use the default ("BTC")
     updateDisplayUnit();
 }
@@ -154,17 +161,19 @@ void SendCoinsEntry::setValue(const SendCoinsRecipient &value)
 {
     recipient = value;
 
-    ui->payTo->setText(value.address);
-    ui->addAsLabel->setText(value.label);
-    ui->payAmount->setValue(value.amount);
-
-    if (!recipient.authenticatedMerchant.isEmpty())
+    if (recipient.authenticatedMerchant.isEmpty())
+    {
+        ui->payTo->setText(recipient.address);
+        ui->addAsLabel->setText(recipient.label);
+        ui->payAmount->setValue(recipient.amount);
+    }
+    else
     {
-        const payments::PaymentDetails& details = value.paymentRequest.getDetails();
+        const payments::PaymentDetails& details = recipient.paymentRequest.getDetails();
 
-        ui->payTo_s->setText(value.authenticatedMerchant);
+        ui->payTo_s->setText(recipient.authenticatedMerchant);
         ui->memoTextLabel_s->setText(QString::fromStdString(details.memo()));
-        ui->payAmount_s->setValue(value.amount);
+        ui->payAmount_s->setValue(recipient.amount);
         setCurrentWidget(ui->SendCoinsSecure);
     }
 }