restore active window after requesting credentials (fixes #11355)

Author: jef-n

src/gui/qgscredentialdialog.cpp

@@ -63,6 +63,8 @@ void QgsCredentialDialog::requestCredentials( QString realm, QString *username,
   if ( !leUsername->text().isEmpty() )
     lePassword->setFocus();
 
+  QWidget *activeWindow = qApp->activeWindow();
+
   QApplication::setOverrideCursor( Qt::ArrowCursor );
 
   QgsDebugMsg( "exec()" );
@@ -71,6 +73,9 @@ void QgsCredentialDialog::requestCredentials( QString realm, QString *username,
 
   QApplication::restoreOverrideCursor();
 
+  if( activeWindow )
+    activeWindow->raise();
+
   if ( *ok )
   {
     *username = leUsername->text();