Merge remote-tracking branch 'origin/5.13' into 5.14v5.14.0-beta3

Change-Id: I3647815e507f5d219ea742413372101c15579b8f

1 files changed, 2 insertions, 1 deletions

diff --git a/src/quick/items/qquickitem.cpp b/src/quick/items/qquickitem.cpp
index 0e035af9a6..4c20b7e2e1 100644
--- a/src/quick/items/qquickitem.cpp
+++ b/src/quick/items/qquickitem.cpp
@@ -2764,7 +2764,8 @@ void QQuickItem::setParentItem(QQuickItem *parentItem)
             // as we potentially changed d->parentWindow above
             // the check in derefWindow could not work
             // thus, we redo it here with the old parent
-            if (!oldParentItem) {
+            // Also, the window may have been deleted by derefWindow()
+            if (!oldParentItem && d->window) {
                 QQuickWindowPrivate::get(d->window)->parentlessItems.remove(this);
             }
         }