message: add a line to be sure there are no crashes
diff: @@ -809,6 +809,7 @@ void AliAnalysisTaskDiHadCorrelHighPt::UserExec(Option_t *)
  fHistPurityCheck->Fill(purhadr);
  AliAODMCParticle* mcTrack = static_cast<AliAODMCParticle*>(mcArray->At(AssocLabel));
  + if(!mcTrack) continue;
  Bool_t isPhyPrim = mcTrack->IsPhysicalPrimary();
  Double_t genPt = mcTrack->Pt();
  Double_t genEta = mcTrack->Eta();
  