Initialize all member data in CaloSD constructor

UBSAN warned that the value for doFineCaloThisStep_ was begin
read before it was set.

Author: Dr15Jones

SimG4CMS/Calo/interface/CaloSD.h

@@ -175,7 +175,7 @@ class CaloSD : public SensitiveCaloDetector,
 
   bool ignoreTrackID;
   bool isParameterized;
-  bool ignoreReject;
+  bool ignoreReject = false;
   bool useMap;  // use map for comparison of ID
   bool corrTOFBeam;
 
@@ -197,7 +197,7 @@ class CaloSD : public SensitiveCaloDetector,
   std::unordered_map<unsigned int, unsigned int> boundaryCrossingParentMap_;
   std::vector<std::unique_ptr<CaloG4Hit>> reusehit[2];
   std::vector<Detector> fineDetectors_;
-  bool doFineCaloThisStep_;
+  bool doFineCaloThisStep_ = false;
 };
 
 #endif  // SimG4CMS_CaloSD_h