message: Add protection against missing leading track
diff: @@ -123,10 +123,12 @@ bool AliAnalysisTaskEmcalJetSpectrumSDPart::Run()
  fHistos->FillTH2("hJetNconstPt", j->Pt(), j->N());
  auto leading = j->GetLeadingTrack(jets->GetParticleContainer()->GetArray());
  + if(leading) {
  fHistos->FillTH2("hPtLeading", j->Pt(), leading->Pt());
  TVector3 jetvec(j->Px(), j->Py(), j->Px()),
  leadingvec(leading->Px(), leading->Py(), leading->Pz());
  fHistos->FillTH2("hDrLeading", j->Pt(), jetvec.DeltaR(leadingvec));
  + }
  // SoftDrop
  auto sdparams = this->MakeSoftdrop(*j, jets->GetJetRadius(), true, sdsettings, AliVCluster::VCluUserDefEnergy_t::kNonLinCorr, vertex);
  