PWGDQ: Fix compilation warnings (#5763)

Author: vkucera

PWGDQ/Core/CutsLibrary.cxx

@@ -1020,7 +1020,7 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
   vecTypetrack.emplace_back("_TPCstrongncls"); // default TightGlobalTrackRun3 but with 130 TPC clusters
 
   // loop to define PID cuts with and without post calibration
-  for (int icase = 0; icase < vecTypetrack.size(); icase++) {
+  for (size_t icase = 0; icase < vecTypetrack.size(); icase++) {
     // 4 cuts to separate pos & neg tracks in pos & neg eta range
     if (!nameStr.compare(Form("lmee_posTrack_posEta_selection%s", vecTypetrack.at(icase).Data()))) {
       cut->AddCut(GetAnalysisCut("posTrack"));
@@ -1128,7 +1128,7 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
   vecPIDcase.emplace_back("_CorrWithKaon"); // case of using post calibrated PID spectra with also the kaons
 
   // loop to define PID cuts with and without post calibration
-  for (int icase = 0; icase < vecPIDcase.size(); icase++) {
+  for (size_t icase = 0; icase < vecPIDcase.size(); icase++) {
     if (!nameStr.compare(Form("ITSTPC_TPCPIDalone%s_PbPb", vecPIDcase.at(icase).Data()))) {
       cut->AddCut(GetAnalysisCut("lmeeStandardKine"));
       cut->AddCut(GetAnalysisCut("TightGlobalTrackRun3"));
@@ -3049,7 +3049,7 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
   vecTypetrack.emplace_back("_TPCstrongncls"); // default TightGlobalTrackRun3 but with 130 TPC clusters
 
   // loop to define PID cuts with and without post calibration
-  for (int icase = 1; icase < vecTypetrack.size(); icase++) {
+  for (size_t icase = 1; icase < vecTypetrack.size(); icase++) {
     if (!nameStr.compare(Form("lmeeQCTrackCuts%s", vecTypetrack.at(icase).Data()))) {
       if (icase == 1) {
         cut->AddCut(VarManager::kIsSPDfirst, 0.5, 1.5);
@@ -3483,7 +3483,7 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
   vecPIDcase.emplace_back("_CorrWithKaon"); // case of using post calibrated PID spectra with also the kaons
 
   // loop to define TPC PID cuts with and without post calibration
-  for (int icase = 0; icase < vecPIDcase.size(); icase++) {
+  for (size_t icase = 0; icase < vecPIDcase.size(); icase++) {
     if (!nameStr.compare(Form("electronPIDOnly%s", vecPIDcase.at(icase).Data()))) {
       if (icase == 0) {
         cut->AddCut(VarManager::kTPCnSigmaEl, -3.0, 3.0);
@@ -3947,7 +3947,7 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
   }
 
   // loop to define TOF PID cuts with and without post calibration
-  for (int icase = 0; icase < vecPIDcase.size(); icase++) {
+  for (size_t icase = 0; icase < vecPIDcase.size(); icase++) {
     if (!nameStr.compare(Form("electronPID_TOFnsigma%s_loose", vecPIDcase.at(icase).Data()))) {
       if (icase == 0) {
         cut->AddCut(VarManager::kTPCnSigmaEl, -3., 3., false, VarManager::kPin, 0.0, 1e+10, false);