Change make_tuple to make_pair for track IDs

Author: dsekihat

PWGEM/PhotonMeson/Core/DiphotonHadronMPC.h

@@ -684,7 +684,7 @@ struct DiphotonHadronMPC {
               }
             }
 
-            std::pair<int, int> tuple_tmp_id2 = std::make_tuple(pos2.trackId(), ele2.trackId());
+            std::pair<int, int> tuple_tmp_id2 = std::make_pair(pos2.trackId(), ele2.trackId());
             if (std::find(used_photonIds_per_col.begin(), used_photonIds_per_col.end(), g1.globalIndex()) == used_photonIds_per_col.end()) {
               emh1->AddTrackToEventPool(key_df_collision, EMTrack(ndf, g1.globalIndex(), collision.globalIndex(), -1, g1.pt(), g1.eta(), g1.phi(), 0));
               used_photonIds_per_col.emplace_back(g1.globalIndex());