tst_QItemModel: fix memleaks

When creating proxied models, make the source model a QObject child of
the proxy model, so the source isn't leaked when the proxy is deleted.

This drove asan nuts.

Pick-to: 6.3 6.2 5.15
Change-Id: I0f7fc9ab8e99d030c941cfb336ee4e2323b362ae
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/auto/corelib/itemmodels/qitemmodel/modelstotest.cpp b/tests/auto/corelib/itemmodels/qitemmodel/modelstotest.cpp
index 3eb6c15ec2..cdbeaccac6 100644
--- a/tests/auto/corelib/itemmodels/qitemmodel/modelstotest.cpp
+++ b/tests/auto/corelib/itemmodels/qitemmodel/modelstotest.cpp
@@ -142,14 +142,14 @@ QAbstractItemModel *ModelsToTest::createModel(const QString &modelType)
 
     if (modelType == "QSortFilterProxyModelEmpty") {
         QSortFilterProxyModel *model = new QSortFilterProxyModel;
-        QStandardItemModel *standardItemModel = new QStandardItemModel;
+        QStandardItemModel *standardItemModel = new QStandardItemModel(model);
         model->setSourceModel(standardItemModel);
         return model;
     }
 
     if (modelType == "QSortFilterProxyModelRegExp") {
         QSortFilterProxyModel *model = new QSortFilterProxyModel;
-        QStandardItemModel *standardItemModel = new QStandardItemModel;
+        QStandardItemModel *standardItemModel = new QStandardItemModel(model);
         model->setSourceModel(standardItemModel);
         populateTestArea(model);
         model->setFilterRegularExpression(QRegularExpression("(^$|I.*)"));
@@ -158,7 +158,7 @@ QAbstractItemModel *ModelsToTest::createModel(const QString &modelType)
 
     if (modelType == "QSortFilterProxyModel") {
         QSortFilterProxyModel *model = new QSortFilterProxyModel;
-        QStandardItemModel *standardItemModel = new QStandardItemModel;
+        QStandardItemModel *standardItemModel = new QStandardItemModel(model);
         model->setSourceModel(standardItemModel);
         populateTestArea(model);
         return model;