Fix references to QGuiApplication::lastWindowClosed

The signal is emitted from QGuiApplication these days.

Pick-to: 6.2
Change-Id: I7423cd4808e8df86960f225fd6e4a12a1a4f11f3
Reviewed-by: Doris Verria <doris.verria@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index 3f73b2ff26..a7c3f86687 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -12225,7 +12225,7 @@ void tst_QWidget::deleteWindowInCloseEvent()
 */
 void tst_QWidget::quitOnClose()
 {
-    QSignalSpy quitSpy(qApp, &QApplication::lastWindowClosed);
+    QSignalSpy quitSpy(qApp, &QGuiApplication::lastWindowClosed);
 
     std::unique_ptr<QWidget>widget(new QWidget);
     widget->show();