CMake: Fix marking the parsing run as successful

This missing mark prevented the Run/Debug buttons to become active
again!

Change-Id: If02f300d4bb67424398102a9ce1677f366bb5801
Reviewed-by: hjk <hjk@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildsystem.cpp

@@ -297,6 +297,7 @@ void CMakeBuildSystem::combineScanAndParse()
 
         if (m_combinedScanAndParseResult) {
             updateProjectData(qobject_cast<CMakeProject *>(m_currentContext.project), bc);
+            m_currentContext.guard.markAsSuccess();
         }
     }