Fix oversights of the Qt Designer Multi examples code changes

- Use new string literals
- Reorder includes
- Use some auto
- Minor fixes

Amends d1e672c47fd9cfa60f646554db6cba9de08a044f.

Fixes: QTBUG-110447
Change-Id: I22c2ee4f2770e2656a6ffad0823ec59f7cf3df23
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
(cherry picked from commit 273202689fcddd5ae8af9596f46f03fc5fa6a6fa)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/designer/containerextension/multipagewidgetextensionfactory.cpp b/examples/designer/containerextension/multipagewidgetextensionfactory.cpp
index 688470ceb..746fe3111 100644
--- a/examples/designer/containerextension/multipagewidgetextensionfactory.cpp
+++ b/examples/designer/containerextension/multipagewidgetextensionfactory.cpp
@@ -16,7 +16,7 @@ QObject *MultiPageWidgetExtensionFactory::createExtension(QObject *object,
                                                           const QString &iid,
                                                           QObject *parent) const
 {
-    MultiPageWidget *widget = qobject_cast<MultiPageWidget*>(object);
+    auto *widget = qobject_cast<MultiPageWidget*>(object);
 
     if (widget && (iid == Q_TYPEID(QDesignerContainerExtension)))
         return new MultiPageWidgetContainerExtension(widget, parent);