message: Compilation fix: macOS High Sierra with Xcode 9.0
diff: @@ -63,9 +63,9 @@ ClassImp(AliMCTreeTools)
  const Double_t kMaxRadius=300;
  TClonesArray* trackRefs = 0;
  -map<Int_t, TClonesArray*> mapTR;
  -map<Int_t, AliTrackReference*> mapFirstTr;
  -map<Int_t, TClonesArray*> mapHelix;
  +std::map<Int_t, TClonesArray*> mapTR;
  +std::map<Int_t, AliTrackReference*> mapFirstTr;
  +std::map<Int_t, TClonesArray*> mapHelix;
  //
  TString wdir="";
  