Fix a `catch` class name
Fix a `catch` class name

Summary: Now that we examine these in lint, this came up. There is no `ConduitException`; the class is `ConduitClientException`.

Test Plan: Lint.

Reviewers: vrana, chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6158

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