Fix T9635 by initializing the property
Fix T9635 by initializing the property

Summary: Fix T9635 by properly initializing a property

Test Plan: run arc unit

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley

Maniphest Tasks: T9635

Differential Revision: https://secure.phabricator.com/D14340

wikimedia/phabricator-arcanist,zhihu/arcanist,haskell-infra/arcanist,alexmv/arcanist,kevinseelbach/arcanist,haskell-infra/arcanist,r4nt/arcanist,chundongwang/arcanist,phacility/arcanist,r4nt/arcanist,calblueprint/arcanist,fivestars/arcanist,kevinseelbach/arcanist,aik099/arcanist,Khan/arcanist,calblueprint/arcanist,chundongwang/arcanist,kevinseelbach/arcanist,Khan/arcanist,codelabs-ch/arcanist,memsql/arcanist,zhihu/arcanist,Khan/arcanist,fivestars/arcanist,phacility/arcanist,coursera/arcanist,codelabs-ch/arcanist,uber/arcanist,kevinseelbach/arcanist,wikimedia/phabricator-arcanist,zhihu/arcanist,phacility/arcanist,folsom-labs/arcanist,alexmv/arcanist,fivestars/arcanist,uber/arcanist,r4nt/arcanist,coursera/arcanist,wikimedia/phabricator-arcanist,folsom-labs/arcanist,chundongwang/arcanist,jra3/arcanist,jra3/arcanist,alexmv/arcanist,chundongwang/arcanist,codelabs-ch/arcanist,codelabs-ch/arcanist,coursera/arcanist,wikimedia/phabricator-arcanist,phacility/arcanist,uber/arcanist,r4nt/arcanist,aik099/arcanist,Khan/arcanist,zhihu/arcanist,memsql/arcanist,haskell-infra/arcanist,haskell-infra/arcanist,memsql/arcanist,coursera/arcanist,calblueprint/arcanist,phacility/arcanist,memsql/arcanist,uber/arcanist,alexmv/arcanist,jra3/arcanist,jra3/arcanist,folsom-labs/arcanist,folsom-labs/arcanist,aik099/arcanist,aik099/arcanist,codelabs-ch/arcanist,calblueprint/arcanist,fivestars/arcanist