macOS: Fix crash when showing parent-less platform menus

Pick-to: 6.0
Pick-to: 5.15
Change-Id: I80f02da1621e4088eb040bb16a4db3867b6ad4d7
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoamenu.mm b/src/plugins/platforms/cocoa/qcocoamenu.mm
index 648f900aa5..1a788e5197 100644
--- a/src/plugins/platforms/cocoa/qcocoamenu.mm
+++ b/src/plugins/platforms/cocoa/qcocoamenu.mm
@@ -386,7 +386,7 @@ void QCocoaMenu::showPopup(const QWindow *parentWindow, const QRect &targetRect,
 
         QCocoaScreen *cocoaScreen = static_cast<QCocoaScreen *>(screen->handle());
         int availableHeight = cocoaScreen->availableGeometry().height();
-        const QPoint &globalPos = cocoaWindow->mapToGlobal(pos);
+        const QPoint globalPos = cocoaWindow ? cocoaWindow->mapToGlobal(pos) : pos;
         int menuHeight = m_nativeMenu.size.height;
         if (globalPos.y() + menuHeight > availableHeight) {
             // Maybe we need to fix the vertical popup position but we don't know the
@@ -430,7 +430,7 @@ void QCocoaMenu::showPopup(const QWindow *parentWindow, const QRect &targetRect,
 
     // The calls above block, and also swallow any mouse release event,
     // so we need to clear any mouse button that triggered the menu popup.
-    if (!cocoaWindow->isForeignWindow())
+    if (cocoaWindow && !cocoaWindow->isForeignWindow())
         [qnsview_cast(view) resetMouseButtons];
 }