Fix cppcheck linter test case
Fix cppcheck linter test case

Summary: This is failing locally with `cppcheck` version 1.69.

Test Plan: Ran `arc unit`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14524

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