Fix Debug build error which is introduced by https://trac.webkit.org/r182828. 'first' is unsigned type variable so it doesn't needed.
Created attachment 250782 [details] Patch
Comment on attachment 250782 [details] Patch LGTM, r=me.
Comment on attachment 250782 [details] Patch Clearing flags on attachment: 250782 Committed r182840: <http://trac.webkit.org/changeset/182840>
All reviewed patches have been landed. Closing bug.