It should be conditionally declared.
Created attachment 219551 [details] Patch
Comment on attachment 219551 [details] Patch r=me. Clang must be generating more warnings than in the past. Thanks for fixing this!
Comment on attachment 219551 [details] Patch Clearing flags on attachment: 219551 Committed r160782: <http://trac.webkit.org/changeset/160782>
All reviewed patches have been landed. Closing bug.