[PWGJE] Fix compilation warnings (#8385)

Co-authored-by: ALICE Builder <alibuild@users.noreply.github.com>

Author: vkucera

PWGJE/Core/JetMatchingUtilities.h

@@ -473,7 +473,7 @@ auto getConstituents(T const& jet, U const& /*constituents*/)
   if constexpr (jetfindingutilities::isEMCALClusterTable<U>()) {
     return jet.template clusters_as<U>();
   } else if constexpr (jetfindingutilities::isDummyTable<U>()) { // this is for the case where EMCal clusters are tested but no clusters exist, like in the case of charged jet analyses
-    return NULL;
+    return nullptr;
   } else {
     return jet.template tracks_as<U>();
   }

PWGJE/TableProducer/rhoEstimator.cxx

@@ -71,7 +71,7 @@ struct RhoEstimatorTask {
 
   Filter trackCuts = (aod::jtrack::pt >= trackPtMin && aod::jtrack::pt < trackPtMax && aod::jtrack::eta > trackEtaMin && aod::jtrack::eta < trackEtaMax && aod::jtrack::phi >= trackPhiMin && aod::jtrack::phi <= trackPhiMax);
 
-  void processChargedCollisions(aod::JetCollision const& collision, soa::Filtered<aod::JetTracks> const& tracks)
+  void processChargedCollisions(aod::JetCollision const& /*collision*/, soa::Filtered<aod::JetTracks> const& tracks)
   {
     inputParticles.clear();
     jetfindingutilities::analyseTracks<soa::Filtered<aod::JetTracks>, soa::Filtered<aod::JetTracks>::iterator>(inputParticles, tracks, trackSelection, trackingEfficiency);

PWGJE/Tasks/emcclustermonitor.cxx

@@ -109,7 +109,6 @@ struct ClusterMonitor {
     mHistManager.add("numberOfClustersSMBC", "number of clusters per supermodule per bunch crossing (ambiguous BCs)", o2HistType::kTH2F, {numberClustersAxis, {20, -0.5, 19.5, "SupermoduleID"}});
 
     // cluster properties (matched clusters)
-    int MaxMatched = 20; // maximum number of matched tracks, hardcoded in emcalCorrectionTask.cxx!
     mHistManager.add("clusterE", "Energy of cluster", o2HistType::kTH1F, {energyAxis});
     mHistManager.add("clusterEMatched", "Energy of cluster (with match)", o2HistType::kTH1F, {energyAxis});
     mHistManager.add("clusterESupermodule", "Energy of the cluster vs. supermoduleID", o2HistType::kTH2F, {energyAxis, supermoduleAxis});

PWGJE/Tasks/jetTutorial.cxx

@@ -313,7 +313,7 @@ struct JetTutorialTask {
       return;
     }
     for (auto& jet : jets) {
-      if (std::abs(RecoDecay::constrainAngle(jet.phi() - leadingTrackPhi, -o2::constants::math::PIHalf) > 0.6)) {
+      if (std::abs(RecoDecay::constrainAngle(jet.phi() - leadingTrackPhi, -o2::constants::math::PIHalf)) > 0.6) {
         registry.fill(HIST("h_recoil_jet_pt"), jet.pt());
         registry.fill(HIST("h_recoil_jet_eta"), jet.eta());
         registry.fill(HIST("h_recoil_jet_phi"), jet.phi());

PWGJE/Tasks/nucleiInJets.cxx

@@ -1202,7 +1202,7 @@ struct nucleiInJets {
       // add pid later
 
       bool jetFlag = false;
-      for (int iDJet = 0; iDJet < mcdJetPt.size(); iDJet++) {
+      for (std::size_t iDJet = 0; iDJet < mcdJetPt.size(); iDJet++) {
         double delPhi = TVector2::Phi_mpi_pi(mcdJetPhi[iDJet] - track.phi());
         double delEta = mcdJetEta[iDJet] - track.eta();
         double R = TMath::Sqrt((delEta * delEta) + (delPhi * delPhi));
@@ -1282,7 +1282,7 @@ struct nucleiInJets {
       // add pid later
 
       bool jetFlag = false;
-      for (int iDJet = 0; iDJet < mcpJetPt.size(); iDJet++) {
+      for (std::size_t iDJet = 0; iDJet < mcpJetPt.size(); iDJet++) {
         double delPhi = TVector2::Phi_mpi_pi(mcpJetPhi[iDJet] - mcParticle.phi());
         double delEta = mcpJetEta[iDJet] - mcParticle.eta();
         double R = TMath::Sqrt((delEta * delEta) + (delPhi * delPhi));

PWGJE/Tasks/phiInJets.cxx

@@ -821,7 +821,7 @@ struct phiInJets {
           int goodjets = 0;
           double jetpt = 0;
 
-          for (int i = 0; i < mcd_pt.size(); i++) {
+          for (std::size_t i = 0; i < mcd_pt.size(); i++) {
             if (i == 0) {
               if (lResonance.M() > 1.005 && lResonance.M() < 1.035) {
                 RealPhiCandWithJet++;

PWGJE/Tasks/statPromptPhoton.cxx

@@ -405,7 +405,7 @@ struct statPromptPhoton {
   using jfilteredMCClusters = soa::Filtered<jMCClusters>;
 
   int nEventsRecMC_JE = 0;
-  void processMCRec_JE(jfilteredCollisions::iterator const& collision, jfilteredMCClusters const& mcclusters, jTrackCandidates const& tracks, soa::Join<aod::JTracks, aod::JTrackExtras, aod::JTrackPIs> const& caltracks, aod::JMcParticles const&, TrackCandidates const&)
+  void processMCRec_JE(jfilteredCollisions::iterator const& collision, jfilteredMCClusters const& mcclusters, jTrackCandidates const& tracks, soa::Join<aod::JTracks, aod::JTrackExtras, aod::JTrackPIs> const& /*caltracks*/, aod::JMcParticles const&, TrackCandidates const&)
   {
 
     nEventsRecMC_JE++;
@@ -437,7 +437,6 @@ struct statPromptPhoton {
       histos.fill(HIST("REC_M02_AC"), mccluster.energy());
       histos.fill(HIST("REC_All_Energy"), mccluster.energy());
       bool photontrigger = false;  // is a neutral cluster
-      bool nonvetotrigger = false; // probably is not a neutral cluster
       bool vetotrigger = false;    // might be a neutral cluster
       bool chargetrigger = false;  // is definitely not a neutral cluster
       double photonPt = 0.0;
@@ -471,7 +470,6 @@ struct statPromptPhoton {
           histos.fill(HIST("REC_Cluster_QA"), 2.5);
           vetotrigger = true;
         } else {
-          nonvetotrigger = true;
           photontrigger = true;
           histos.fill(HIST("REC_Cluster_QA"), 1.5);
         }

PWGJE/Tasks/v0qa.cxx

@@ -1258,7 +1258,7 @@ struct V0QA {
 
   using DaughterJTracks = soa::Join<aod::JetTracks, aod::JTrackPIs>;
   using DaughterTracks = soa::Join<aod::FullTracks, aod::TracksDCA, aod::TrackSelection, aod::TracksCov>;
-  void processV0TrackQA(aod::JetCollision const& jcoll, soa::Join<aod::CandidatesV0Data, aod::V0SignalFlags> const& v0s, DaughterJTracks const&, DaughterTracks const&)
+  void processV0TrackQA(aod::JetCollision const& /*jcoll*/, soa::Join<aod::CandidatesV0Data, aod::V0SignalFlags> const& v0s, DaughterJTracks const&, DaughterTracks const&)
   {
     //   if (!jetderiveddatautilities::selectCollision(jcoll, eventSelection)) {
     //     return;