Fix compilation error

Author: romainschotter

PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

@@ -2064,9 +2064,9 @@ struct derivedlambdakzeroanalysis {
     auto v0mother = v0.motherMCPart();
     float rapidityXi = 999.;
     if (std::abs(v0mother.pdgCode()) == PDG_t::kXiMinus)
-      rapidity = RecoDecay::y(std::array{v0mother.px(), v0mother.py(), v0mother.pz()}, o2::constants::physics::MassXiMinus);
+      rapidityXi = RecoDecay::y(std::array{v0mother.px(), v0mother.py(), v0mother.pz()}, o2::constants::physics::MassXiMinus);
     if (std::abs(v0mother.pdgCode()) == o2::constants::physics::Pdg::kXi0)
-      rapidity = RecoDecay::y(std::array{v0mother.px(), v0mother.py(), v0mother.pz()}, o2::constants::physics::MassXi0);
+      rapidityXi = RecoDecay::y(std::array{v0mother.px(), v0mother.py(), v0mother.pz()}, o2::constants::physics::MassXi0);
 
     if (std::fabs(rapidityXi) > 0.5f)
       return; // not a valid mother rapidity (PDG selection is later)