message: Added protection in AliReducedEventInfo for null calo cluster arrays
diff: @@ -365,10 +365,13 @@ AliReducedCaloClusterInfo* AliReducedEventInfo::GetCaloClusterFromID(Int_t clust
  //
  // get calorimeter cluster from ID
  //
  + if(!fCaloClusters) return NULL;
  + if(fCaloClusters->GetEntries()==0) return NULL;
  TIter nextCluster(fCaloClusters);
  AliReducedCaloClusterInfo* cluster = NULL;
  for (Int_t i=0; i<fCaloClusters->GetEntries(); ++i) {
  cluster = (AliReducedCaloClusterInfo*)nextCluster();
  + if(!cluster) continue;
  if (clusterID==cluster->ClusterID()) return cluster;
  }
  return NULL;
  