HepMcParticleLink: fix inefficient barcode processing when they are 0
Fix inefficient barcode processing in HepMcParticleLink
when they are 0.
Probably fixes ATLASSIM-6384 fully together with !60530 (merged).
Fix inefficient barcode processing in HepMcParticleLink
when they are 0.
Probably fixes ATLASSIM-6384 fully together with !60530 (merged).