message: add protection and warning in case non std cells array not found
diff: @@ -691,7 +691,13 @@ void AliAnalysisTaskEMCALClusterize::CheckAndGetEvent()
  if ( fInputCaloCellsName.Length() == 0 )
  fCaloCells = fEvent->GetEMCALCells();
  else
  + {
  fCaloCells = (AliVCaloCells*) fEvent->FindListObject(fInputCaloCellsName);
  + if ( !fCaloCells )
  + AliWarning(Form("CaloCells branch <%s> not found use STD!",fInputCaloCellsName.Data()));
  + else
  + fCaloCells = fEvent->GetEMCALCells();
  + }
  //Process events if there is a high energy cluster
  if(!AcceptEventEMCAL()) { fEvent = 0x0 ; return ; }
  