QListView: Reset style after using a temporary proxy

Amends 0242be90606b377864c6fd02d5a8e0afaf635acf, and removes unwanted
side effect of having a modified style behavior for later functions.

Pick-to: 6.5 6.4 6.2
Change-Id: If3dff0d7ab9e6c6c10e7a92d0a3eaff98fa1457f
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>

1 files changed, 5 insertions, 0 deletions

diff --git a/tests/auto/widgets/itemviews/qlistview/tst_qlistview.cpp b/tests/auto/widgets/itemviews/qlistview/tst_qlistview.cpp
index c7bd1c934a..cb6a05c135 100644
--- a/tests/auto/widgets/itemviews/qlistview/tst_qlistview.cpp
+++ b/tests/auto/widgets/itemviews/qlistview/tst_qlistview.cpp
@@ -3058,6 +3058,11 @@ void tst_QListView::spacingWithWordWrap()
         }
     };
 
+    QStyle *oldStyle = QApplication::style();
+    oldStyle->setParent(nullptr);
+    const auto resetStyle = qScopeGuard([oldStyle]{
+        QApplication::setStyle(oldStyle);
+    });
     QApplication::setStyle(new MyStyle(scrollBarOverlap));
 
     const int listViewResizeCount = 200;