Recreating QCoreApplication could cause a crash in QNetworkAccessManager
constructor. That was caused by an invalid shutdown detection introduced
in f273d6fbc0.
Task-number: QTBUG-36897
Change-Id: Ib5bba773a2a4fcde690a3a93680aef551aae3a5b
Reviewed-by: Peter Hartmann <phartmann@blackberry.com>
