Merge branch 'cc/ref-is-hidden-microcleanup' into maint

Code cleanup. * cc/ref-is-hidden-microcleanup: refs: use skip_prefix() in ref_is_hidden()

Junio C Hamano committed Aug 23, 2017 at 14:33 UTC d0dffcacf3a721789984aed5a5e0af738b1d9f36

No changes.