Merge branch 'rs/help-unknown-ref-does-not-return'

Code cleanup. * rs/help-unknown-ref-does-not-return: help: make help_unknown_ref() NORETURN

Junio C Hamano committed Sep 30, 2019 at 13:19 UTC 8e111e487bbb939406655619e7ed241bd263d85c

No changes.