Fix a bug in updateBackReferenceVersions that could skip updating a back-reference branch.
Fix a bug in updateBackReferenceVersions that could skip updating a back-reference branch.

jontewks/falcor,nicolasartman/falcor,michaelbpaulson/falcor,Netflix/falcor,michaelbpaulson/falcor,jontewks/falcor,sdesai/falcor,nicolasartman/falcor,sdesai/falcor,Netflix/falcor