R1:441112c8e293

Conpherence - fix a typo

Summary: this typo broke (at least) renaming the thread from the durable column.

Test Plan: renamed a thread from durable column and it worked

Reviewers: chad, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D12104