Qt Designer: Replace QLatin1Char by modern literals

Pick-to: 6.5
Change-Id: Ied11784e840d03542a5db281590729838ed625c3
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/src/designer/src/lib/shared/qdesigner_formbuilder.cpp b/src/designer/src/lib/shared/qdesigner_formbuilder.cpp
index 27b92c4e5..ff52bfd4b 100644
--- a/src/designer/src/lib/shared/qdesigner_formbuilder.cpp
+++ b/src/designer/src/lib/shared/qdesigner_formbuilder.cpp
@@ -323,12 +323,8 @@ QWidget *QDesignerFormBuilder::createPreview(const QDesignerFormWindowInterface
     }
     // Fake application style sheet by prepending. (If this doesn't work, fake by nesting
     // into parent widget).
-    if (!appStyleSheet.isEmpty()) {
-        QString styleSheet = appStyleSheet;
-        styleSheet += QLatin1Char('\n');
-        styleSheet +=  widget->styleSheet();
-        widget->setStyleSheet(styleSheet);
-    }
+    if (!appStyleSheet.isEmpty())
+        widget->setStyleSheet(appStyleSheet + u'\n' + widget->styleSheet());
     return widget;
 }