Fix missing whitespace in rP23f25edd97f052ff4c1c5d8c4be962b4da149bca

Summary: See rP23f25edd97f052ff4c1c5d8c4be962b4da149bca.

Test Plan: RAN LINT AND UNIT TESTS. VERIFIED THERE ARE NO SYNTAX ERRORS.

Reviewers: vrana

Reviewed By: vrana

CC: aran

Differential Revision: https://secure.phabricator.com/D2240