Merge branch 'ao/check-resolve-ref-unsafe-result' into maint

"git commit", after making a commit, did not check for errors when asking on what branch it made the commit, which has been correted. * ao/check-resolve-ref-unsafe-result: commit: check result of resolve_ref_unsafe

Junio C Hamano committed Nov 15, 2017 at 12:04 UTC a9749b0b785c2ccf245835d9a8426fa28c62005e

No changes.