Merge branch 'rs/update-hook-optim' into maint

Code clean-up. * rs/update-hook-optim: receive-pack: simplify run_update_post_hook()

Junio C Hamano committed Mar 28, 2017 at 13:52 UTC fd7c41ec9745a4df199492b1736c9821b6c1028f

No changes.