Crashes when SPDY is enabled in QtWebKit

If SPDY is enabled in QtWebKit (by modifying sources). It will crash on a number of webpages.

Example crash from facebook.com:
#0 QSpdyProtocolHandler::replyFinishedWithError (this=this@entry=0x7fff482e5f70, httpReply=httpReply@entry=0x0, streamID=streamID@entry=3,
errorCode=QNetworkReply::ProtocolFailure, errorMessage=0x7fff48360b78 "SPDY stream is not active") at access/qspdyprotocolhandler.cpp:1256
#1 0x00007fffef53a58d in QSpdyProtocolHandler::handleRST_STREAM (this=this@entry=0x7fff482e5f70, length=length@entry=8, frameData=...)
at access/qspdyprotocolhandler.cpp:1006
#2 0x00007fffef53d683 in QSpdyProtocolHandler::handleControlFrame (this=0x7fff482e5f70, frameHeaders=...) at access/qspdyprotocolhandler.cpp:830
#3 0x00007fffef53dadd in QSpdyProtocolHandler::_q_receiveReply (this=0x7fff482e5f70) at access/qspdyprotocolhandler.cpp:346
#4 0x00007fffef53510a in _q_readyRead (this=<optimized out>) at access/qhttpnetworkconnectionchannel.cpp:218
#5 QHttpNetworkConnectionChannel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>)
at .moc/moc_qhttpnetworkconnectionchannel_p.cpp:116
#6 0x00007fffeea6692e in QMetaObject::activate (sender=sender@entry=0x7fff48252ee0, signalOffset=<optimized out>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3682
#7 0x00007fffeea66e87 in QMetaObject::activate (sender=sender@entry=0x7fff48252ee0, m=m@entry=0x7fffeee7cb60 <QIODevice::staticMetaObject>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3548
#8 0x00007fffeead0ad0 in QIODevice::readyRead (this=this@entry=0x7fff48252ee0) at .moc/moc_qiodevice.cpp:153
#9 0x00007fffef5dbfd5 in QSslSocketBackendPrivate::transmit (this=0x7fff4828dd60) at ssl/qsslsocket_openssl.cpp:945
#10 0x00007fffef5d5f29 in QSslSocket::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>)
at .moc/moc_qsslsocket.cpp:156
#11 0x00007fffeea6692e in QMetaObject::activate (sender=sender@entry=0x7fff480f5b00, signalOffset=<optimized out>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3682
#12 0x00007fffeea66e87 in QMetaObject::activate (sender=sender@entry=0x7fff480f5b00, m=m@entry=0x7fffeee7cb60 <QIODevice::staticMetaObject>,
local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3548
#13 0x00007fffeead0ad0 in QIODevice::readyRead (this=this@entry=0x7fff480f5b00) at .moc/moc_qiodevice.cpp:153
#14 0x00007fffef5aeb98 in QAbstractSocketPrivate::canReadNotification (this=0x7fff4828e500) at socket/qabstractsocket.cpp:739
#15 0x00007fffef5bc361 in QReadNotifier::event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1147
#16 0x00007ffff002178c in QApplicationPrivate::notify_helper (this=this@entry=0x640ac0, receiver=receiver@entry=0x7fff48252340, e=e@entry=0x7fff4d815b30)
at kernel/qapplication.cpp:3519
#17 0x00007ffff00268ae in QApplication::notify (this=0x7fffffffdfb0, receiver=0x7fff48252340, e=0x7fff4d815b30) at kernel/qapplication.cpp:3269
#18 0x00007fffeea3f41d in QCoreApplication::notifyInternal (this=0x7fffffffdfb0, receiver=0x7fff48252340, event=event@entry=0x7fff4d815b30)
at kernel/qcoreapplication.cpp:937
#19 0x00007fffeea8ccdf in sendEvent (event=0x7fff4d815b30, receiver=<optimized out>)
at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:238
#20 socketNotifierSourceDispatch (source=source@entry=0x7fff48001340) at kernel/qeventdispatcher_glib.cpp:109
#21 0x00007ffff5cdff25 in g_main_dispatch (context=0x7fff48000990) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3054
#22 g_main_context_dispatch (context=context@entry=0x7fff48000990) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3630
#23 0x00007ffff5ce0268 in g_main_context_iterate (context=context@entry=0x7fff48000990, block=block@entry=1, dispatch=dispatch@entry=1,
self=<optimized out>) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3701
#24 0x00007ffff5ce0324 in g_main_context_iteration (context=0x7fff48000990, may_block=1) at /tmp/buildd/glib2.0-2.36.1/./glib/gmain.c:3762
#25 0x00007fffeea8c22c in QEventDispatcherGlib::processEvents (this=0x7fff480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#26 0x00007fffeea3e11b in QEventLoop::exec (this=this@entry=0x7fff4d815d20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#27 0x00007fffee85447a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:511
#28 0x00007fffee8589a3 in QThreadPrivate::start (arg=0xd621f0) at thread/qthread_unix.cpp:345
#29 0x00007fffee351e0e in start_thread (arg=0x7fff4d816700) at pthread_create.c:311
#30 0x00007fffed31895d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113