Patch forthcoming.
Created attachment 117306 [details] the patch This passes tests and is low-risk but I'll leave it up on EWS for a while anyway since I'm not in a hurry.
Comment on attachment 117306 [details] the patch Looks like it should land.
Comment on attachment 117306 [details] the patch Clearing flags on attachment: 117306 Committed r101615: <http://trac.webkit.org/changeset/101615>
All reviewed patches have been landed. Closing bug.