[GTK] "use-after-free" warning in WebCore/page/Navigation.cpp with …

…GCC 12

https://bugs.webkit.org/show_bug.cgi?id=271648

Reviewed by NOBODY (OOPS!).

Similar to https://bugs.webkit.org/show_bug.cgi?id=239353.

It seems like a bug in GCC. This warning can be ignored.

* Source/WebCore/page/Navigation.cpp:
(WebCore::Navigation::innerDispatchNavigateEvent):

Source/WebCore/page/Navigation.cpp

@@ -433,7 +433,9 @@ bool Navigation::innerDispatchNavigateEvent(NavigationNavigationType navigationT
     if (apiMethodTracker)
         apiMethodTracker->info = JSC::jsUndefined();
 
+IGNORE_GCC_WARNINGS_BEGIN("use-after-free")
     Ref event = NavigateEvent::create(eventNames().navigateEvent, init, abortController);
+IGNORE_GCC_WARNINGS_END
     m_ongoingNavigateEvent = event.ptr();
     m_focusChangedDuringOnoingNavigation = false;
     m_suppressNormalScrollRestorationDuringOngoingNavigation = false;