GeneratorObjects: Fix null link test.
When testing for a null HepMcParticleLink, need to check for a barcode of 0x7fffffff as well as 0.
Should fix ATLASRECTS-4874.
GitLab jobs artifacts no longer stored forever as of Monday, November 4th 08:30h. Further information under https://cern.ch/otg0152576
When testing for a null HepMcParticleLink, need to check for a barcode of 0x7fffffff as well as 0.
Should fix ATLASRECTS-4874.