message: add more sensible check for cluster container in background computation
diff: @@ -1888,7 +1888,7 @@ void AliAnalysisTaskEmcalJetPerformance::ComputeBackground()
  // Loop over clusters, if the jet container is for full jets. Sum the cluster ET:
  // (1) in the EMCal, (2) in the EMCal fiducial volume, (3) in the DCal, (4), in the DCal fiducial volume, (5) in the EMCal random cone, (6) in the DCal random cone
  - if (jetCont->GetArrayName().Contains("Full")) {
  + if (jetCont->GetClusterContainer()) {
  AliClusterContainer* clusCont = GetClusterContainer(0);
  AliTLorentzVector clus;
  