In some cases calls to QFile::open are made outside of a testfunction
(so we can't use QVERIFY), or even in standalone executables that are
executed by tests. Make them fail "visibly".
Change-Id: Iec4d56f6d874be16aa2e9ad6974eeec2a98caa3f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>