Webkit crash while doing UK speedtest

 
ASSERTION FAILED: m_ptr
..\WTF/wtf/OwnPtr.h(72) : WTF::OwnPtr<T>::ValueType* WTF::OwnPtr<T>::operator->() const [with T = WebCore::QNetworkReplyWrapper; WTF::OwnPtr<T>::PtrType = WebCore::QNetworkReplyWrapper*; WTF::OwnPtr<T>::ValueType = WebCore::QNetworkReplyWrapper]
1   0C0F51CD
2   0C0F6F34
3   0C0F6F80
4   6B955027
5   6B95498C
6   6B9A92A0
7   67CBD5EE
8   67D1ACC1
9   6B94E76C
10  6B94F4DB
11  1EDFDF61
12  1EDFBA13
13  6B929EEE
14  6B9CF5E7
15  6B92B0A6
16  6B92AB8E
17  6285CF11
18  6B978658
19  772F62FA
20  772F6D3A
21  772F77C4
22  772F788A
23  6B979C99
24  6285CDF0
25  6B927F94
26  6B92822F
27  6B92A53D
28  025A6520
29  1EDFB357
30  0040360A
31  0040A42B

 
0	WTFCrash	C:\Qt\5.3\mingw482_32\bin\Qt5WebKitd.dll		0xc900805	
1	WebCore::QNetworkReplyHandler::forwardData()	C:\Qt\5.3\mingw482_32\bin\Qt5WebKitd.dll		0xc0f7d5b	
2	WebCore::QNetworkReplyHandlerCallQueue::flush() [clone .part.73]	C:\Qt\5.3\mingw482_32\bin\Qt5WebKitd.dll		0xc0f51cd	
3	WebCore::QNetworkReplyHandlerCallQueue::push(void (WebCore::QNetworkReplyHandler::*)())	C:\Qt\5.3\mingw482_32\bin\Qt5WebKitd.dll		0xc0f6f34	
4	WebCore::QNetworkReplyWrapper::didReceiveReadyRead()	C:\Qt\5.3\mingw482_32\bin\Qt5WebKitd.dll		0xc0f6f80	
5	QMetaObject::activate		3681	0x6b955027	
6	QMetaObject::activate		3547	0x6b95498c	
7	QIODevice::readyRead		153	0x6b9a92a0	
8	QNetworkReplyHttpImplPrivate::replyDownloadData		1049	0x67cbd5ee	
9	QNetworkReplyHttpImpl::qt_static_metacall		222	0x67d1acc1	
10	QMetaCallEvent::placeMetaCall		487	0x6b94e76c	
11	QObject::event		1241	0x6b94f4db	
12	QApplicationPrivate::notify_helper		3499	0x1edfdf61	
13	QApplication::notify		2952	0x1edfba13	
14	QCoreApplication::notifyInternal		935	0x6b929eee	
15	QCoreApplication::sendEvent		237	0x6b9cf5e7	
16	QCoreApplicationPrivate::sendPostedEvents		1539	0x6b92b0a6	
17	QCoreApplication::sendPostedEvents		1397	0x6b92ab8e	
18	QWindowsGuiEventDispatcher::sendPostedEvents		88	0x6285cf11	
19	qt_internal_proc(HWND__*, unsigned int, unsigned int, long)*16		419	0x6b978658	
20	gapfnScSendMessage	C:\Windows\syswow64\user32.dll		0x772f62fa	
21	??			0x30a32	
22	USER32!GetThreadDesktop	C:\Windows\syswow64\user32.dll		0x772f6d3a	
23	__lambda0::operator()		362	0x6b978393	
24	??			0x30a32	
25	USER32!CharPrevW	C:\Windows\syswow64\user32.dll		0x772f77c4	
26	USER32!DispatchMessageW	C:\Windows\syswow64\user32.dll		0x772f788a	
27	QEventDispatcherWin32::processEvents		794	0x6b979c99	
28	QWindowsGuiEventDispatcher::processEvents		80	0x6285cdf0	
29	QEventLoop::processEvents		136	0x6b927f94	
30	QEventLoop::exec		212	0x6b92822f	
31	QCoreApplication::exec		1188	0x6b92a53d	
32	QGuiApplication::exec		1483	0x25a6520	
33	QApplication::exec		2744	0x1edfb357	
34	qMain	main.cpp	60	0x40360a	
35	WinMain*16		131	0x40a42b	
36	main			0x4261bd