Bug 269373 – Crash under WebPage::close()

• Component: WebKit2
• Status: RESOLVED FIXED

[Chris Dumez]

Crash under WebPage::close():
```
49 std::__1::unique_ptr<WebCore::FrameLoader, std::__1::default_delete<WebCore::FrameLoader>>::operator*[abi:v160006]() const <==
      | 49 WTF::UniqueRef<WebCore::FrameLoader>::get()
      |   49 WebCore::LocalFrame::loader()
      |     49 WebKit::WebPage::close()
      |       49 auto void IPC::callMemberFunction<WebKit::WebPage, WebKit::WebPage, void (), std::__1::tuple<>>(WebKit::WebPage*, void (WebKit::WebPage::*)(), std::__1::tuple<>&&)::'lambda'(auto&&...)::operator()<>(auto&&...) const
      |         49 decltype(std::declval<WebKit::WebPage>()()) std::__1::__invoke[abi:v160006]<void IPC::callMemberFunction<WebKit::WebPage, WebKit::WebPage, void (), std::__1::tuple<>>(WebKit::WebPage*, void (WebKit::WebPage::*)(), std::__1::tuple<>&&)::'lambda'(auto&&...)>(WebKit::WebPage&&)
      |           49 decltype(auto) std::__1::__apply_tuple_impl[abi:v160006]<void IPC::callMemberFunction<WebKit::WebPage, WebKit::WebPage, void (), std::__1::tuple<>>(WebKit::WebPage*, void (WebKit::WebPage::*)(), std::__1::tuple<>&&)::'lambda'(auto&&...), std::__1::tuple<>>(WebKit::WebPage&&, WebKit::WebPage&&, std::__1::__tuple_indices<>)
      |             49 decltype(auto) std::__1::apply[abi:v160006]<void IPC::callMemberFunction<WebKit::WebPage, WebKit::WebPage, void (), std::__1::tuple<>>(WebKit::WebPage*, void (WebKit::WebPage::*)(), std::__1::tuple<>&&)::'lambda'(auto&&...), std::__1::tuple<>>(WebKit::WebPage&&, WebKit::WebPage&&)
```

[Chris Dumez]

<rdar://118486861>

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/24424

[EWS]

Committed 274641@main (c3b754f8cd59): <https://commits.webkit.org/274641@main>

Reviewed commits have been landed. Closing PR #24424 and removing active labels.