message: skip jets with 1 constituent
diff: @@ -2291,6 +2291,8 @@ Bool_t AliAnalysisTaskDmesonJetsSub::AnalysisEngine::ExtractD0Efficiencies(const
  std::vector<fastjet::PseudoJet> jets_incl = sorted_by_pt(fFastJetWrapper->GetInclusiveJets());
  for (auto jet : jets_incl) {
  + std::vector<fastjet::PseudoJet> constituents = jet.constituents();
  + if(constituents.size()<2) continue;
  for (auto constituent : jet.constituents()) {
  Int_t iPart = constituent.user_index() - 100;
  if (constituent.perp() < 1e-6) continue; // reject ghost particles
  @@ -2418,6 +2420,8 @@ Bool_t AliAnalysisTaskDmesonJetsSub::AnalysisEngine::GetEfficiencyDenominator(Al
  for (auto jet : jets_incl) {
  jetpt=0;
  jeteta=0;
  + std::vector<fastjet::PseudoJet> constituents = jet.constituents();
  + if(constituents.size()<2) continue;
  for (auto constituent : jet.constituents()) {
  Int_t iPart = constituent.user_index() - 100;
  if (constituent.perp() < 1e-6) continue; // reject ghost particles
  