Ensure update of the result label after updating the form

During the update of the form the lineList is temporarily cleared.
If the input fields are preset from saved values, then the update of the
result label is triggered, but because of the empty lineList it is updated
to an empty DN value (for protocol CMS).

GnuPG-bug-id: 5832

src/newcertificatewizard/newcertificatewizard.cpp

@@ -1553,6 +1553,8 @@ void EnterDetailsPage::updateForm()
         ui.emailLE->setText(userEmailAddress());
     }
 
+    slotUpdateResultLabel();
+
     set_tab_order(widgets);
 }