Use hgsprintf() when managing bookmarks in arc patch in mercurial
Use hgsprintf() when managing bookmarks in arc patch in mercurial

Summary: Fixes T4596. I couldn't immediately reproduce this, but the `hgsprintf()` version is clearly more correct.

Test Plan: Used `arc patch --trace` to examine hg commands.

Reviewers: btrahan, durham

Reviewed By: durham

Subscribers: aran, epriestley

Maniphest Tasks: T4596

Differential Revision: https://secure.phabricator.com/D8512

wharris/arcanist,sneakpeeq/arcanist,hach-que/arcanist,eSpark/arcanist,codelabs-ch/arcanist,Symplicity/arcanist,Khan/arcanist,codelabs-ch/arcanist,phacility/arcanist,aik099/arcanist,zhihu/arcanist,r4nt/arcanist,wxstars/arcanist,jra3/arcanist,uber/arcanist,Khan/arcanist,calblueprint/arcanist,phacility/arcanist,fivestars/arcanist,KieranHayes/arcanist,haskell-infra/arcanist,codelabs-ch/arcanist,haskell-infra/arcanist,wikimedia/phabricator-arcanist,chundongwang/arcanist,eSpark/arcanist,uber/arcanist,chundongwang/arcanist,memsql/arcanist,jra3/arcanist,coursera/arcanist,hach-que/arcanist,aik099/arcanist,zhihu/arcanist,uber/arcanist,codelabs-ch/arcanist,kevinseelbach/arcanist,wikimedia/phabricator-arcanist,folsom-labs/arcanist,wxstars/arcanist,aik099/arcanist,alexmv/arcanist,sneakpeeq/arcanist,Symplicity/arcanist,Khan/arcanist,KieranHayes/arcanist,Symplicity/arcanist,chundongwang/arcanist,fivestars/arcanist,wikimedia/phabricator-arcanist,uber/arcanist,kevinseelbach/arcanist,calblueprint/arcanist,codelabs-ch/arcanist,wxstars/arcanist,fivestars/arcanist,folsom-labs/arcanist,folsom-labs/arcanist,chundongwang/arcanist,PageUpPeopleOrg/arcanist-patches,jra3/arcanist,dguo-coursera/arcanist,calblueprint/arcanist,alexmv/arcanist,phacility/arcanist,fivestars/arcanist,wharris/arcanist,dguo-coursera/arcanist,r4nt/arcanist,wharris/arcanist,r4nt/arcanist,coursera/arcanist,coursera/arcanist,memsql/arcanist,zhihu/arcanist,folsom-labs/arcanist,alexmv/arcanist,eSpark/arcanist,hach-que/arcanist,hach-que/arcanist,wikimedia/phabricator-arcanist,aik099/arcanist,kevinseelbach/arcanist,Khan/arcanist,kevinseelbach/arcanist,dguo-coursera/arcanist,calblueprint/arcanist,alexmv/arcanist,haskell-infra/arcanist,sneakpeeq/arcanist,memsql/arcanist,Symplicity/arcanist,PageUpPeopleOrg/arcanist-patches,coursera/arcanist,dguo-coursera/arcanist,jra3/arcanist,PageUpPeopleOrg/arcanist-patches,sneakpeeq/arcanist,PageUpPeopleOrg/arcanist-patches,memsql/arcanist,eSpark/arcanist,r4nt/arcanist,phacility/arcanist,zhihu/arcanist,phacility/arcanist,KieranHayes/arcanist,wxstars/arcanist,wharris/arcanist,KieranHayes/arcanist,haskell-infra/arcanist