ClangSA fix looper in FunctionDumper 

This function condPython::defineWhat<SiStripSummary>() caused an infinite loop in FunctionDumper after a call to VisitChildren was added to FunctionDumper. 
https://cmssdt.cern.ch/SDT/lxr/source/CondCore/SiStripPlugins/plugins/SiStripSummaryPyWrapper.cc#112