message: fix Proton file name
diff: @@ -56,8 +56,10 @@ AliAnalysisTaskTrackingSysPropagation *AddTaskTrackingSysPropagation(Int_t syste
  if(!histoME){ Printf("FATAL: Histo with ME syst. not found: analysis will not start!\n"); return NULL;}
  TH1F *histoMEPr = 0x0;
  + TFile* fileMESysPr;
  if(!filenameHistMEPr.EqualTo("")) {
  - histoMEPr = (TH1F*)fileMESys->Get("hPr");
  + fileMESysPr=TFile::Open(filenameHistMEPr.Data());
  + histoMEPr = (TH1F*)fileMESysPr->Get("hPr");
  if(!histoMEPr){ Printf("FATAL: Histo with ME syst. for proton not found: analysis will not start!\n"); return NULL;}
  }
  