message: /PWGGA/GammaConv: changed Int_t to UInt_t in NeutralMeson task
  changed Int_t to UInt_t when comparing with .size() in NeutralMesonPiPlPiMiPiZero task to avoid compilation warnings
diff: @@ -1978,7 +1978,7 @@ void AliAnalysisTaskNeutralMesonToPiPlPiMiPiZero::ProcessPionCandidates(){
  vector<Int_t> lGoodNegPionIndexPrev(0);
  vector<Int_t> lGoodPosPionIndexPrev(0);
  - for(Int_t i = 0; i < fSelectorNegPionIndex.size(); i++){
  + for(UInt_t i = 0; i < fSelectorNegPionIndex.size(); i++){
  AliESDtrack* negPionCandidate = fESDEvent->GetTrack(fSelectorNegPionIndex[i]);
  if(! ((AliPrimaryPionCuts*)fPionCutArray->At(fiCut))->PionIsSelected(negPionCandidate) ) continue;
  lGoodNegPionIndexPrev.push_back( fSelectorNegPionIndex[i] );
  @@ -2017,7 +2017,7 @@ void AliAnalysisTaskNeutralMesonToPiPlPiMiPiZero::ProcessPionCandidates(){
  }
  }
  - for(Int_t i = 0; i < fSelectorPosPionIndex.size(); i++){
  + for(UInt_t i = 0; i < fSelectorPosPionIndex.size(); i++){
  AliESDtrack* posPionCandidate = fESDEvent->GetTrack( fSelectorPosPionIndex[i] );
  if(! ((AliPrimaryPionCuts*)fPionCutArray->At(fiCut))->PionIsSelected(posPionCandidate) ) continue;
  lGoodPosPionIndexPrev.push_back( fSelectorPosPionIndex[i] );
  @@ -2057,11 +2057,11 @@ void AliAnalysisTaskNeutralMesonToPiPlPiMiPiZero::ProcessPionCandidates(){
  }
  - for(Int_t i = 0; i < lGoodNegPionIndexPrev.size(); i++){
  + for(UInt_t i = 0; i < lGoodNegPionIndexPrev.size(); i++){
  AliESDtrack *negPionCandidate = fESDEvent->GetTrack(lGoodNegPionIndexPrev[i]);
  AliKFParticle negPionCandidateKF( *negPionCandidate->GetConstrainedParam(), 211 );
  - for(Int_t j = 0; j < lGoodPosPionIndexPrev.size(); j++){
  + for(UInt_t j = 0; j < lGoodPosPionIndexPrev.size(); j++){
  AliESDtrack *posPionCandidate = fESDEvent->GetTrack(lGoodPosPionIndexPrev[j]);
  AliKFParticle posPionCandidateKF( *posPionCandidate->GetConstrainedParam(), 211 );
  