MuonTruthAlgs: Fix compilation with c++20. (!28969) · Merge requests · atlas / athena · GitLab

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Scott Snyder requested to merge ssnyder/athena:cxx20.MuonTruthAlgs-20191217 into master Dec 17, 2019

A comparison involving HepMcParticleLink becomes ambiguous under c++20's comparison rules. Fixed.