Mark Wang 6d0272af42 Fix potential unused variable error
Summary: If we're compiling with `-Wunused-variable` and `__IPHONE_OS_VERSION_MIN_REQUIRED` >= 8.0, this would cause an build error.

Reviewed By: javache, majak

Differential Revision: D3019904

fb-gh-sync-id: d4482d7d070f8d896acd44b03ebc70bacd9f2f3f
shipit-source-id: d4482d7d070f8d896acd44b03ebc70bacd9f2f3f
2016-03-08 10:16:30 -08:00
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2015-03-26 02:42:24 -08:00
2016-01-27 14:55:36 -08:00