message: fix to run with enableFracEMCRecalc true, protection for negative digit index for noisy towers with no MC label
diff: @@ -609,6 +609,8 @@ void AliEmcalCorrectionClusterizer::RecPoints2Clusters(TClonesArray *clus)
  {
  Int_t idigit = fCellLabels[absIds[icell]];
  + if ( idigit < 0 ) continue;
  +
  const AliEMCALDigit * dig = (const AliEMCALDigit*)fDigitsArr->At(idigit);
  // Find the 4 MC labels that contributed to the cluster and their
  