message: Fix bug in OOB pile-up MC handeling
diff: @@ -430,7 +430,7 @@ void AliAnalysisTaskStrVsMult::UserExec(Option_t *)
  //get MC header and MC array
  AliAODMCHeader* header = 0x0;
  TClonesArray* MCTrackArray = 0x0;
  - if(!isESD) {
  + if(!isESD && fisMC) {
  header = static_cast<AliAODMCHeader*>(lAODevent->FindListObject(AliAODMCHeader::StdBranchName()));
  if (!header) {
  AliWarning("No header found.");
  