AutoTest: Ensure test runner does not get stuck

If we fail to start the executable or the executable is missing
we need to ensure the runner continues by cleaning up and
scheduling the next test if there are more.

Fixes: QTCREATORBUG-27285
Change-Id: Ia89374d7105f2fd6a42fa3fa018f14677e30ad1b
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/autotest/testrunner.cpp

@@ -287,6 +287,7 @@ void TestRunner::scheduleNext()
         reportResult(ResultType::MessageFatal,
             tr("Failed to start test for project \"%1\".").arg(m_currentConfig->displayName())
                 + processInformation(m_currentProcess) + rcInfo(m_currentConfig));
+        onProcessFinished();
     }
 }