mozilla/webvtt — pull request #275 by caitp (2013-03-21 14:40:04+00:00)
Title: signed/unsigned warning on WEBVTT_IS_VALID_INTERNAL_NODE

WEBVTT_IS_VALID_INTERNAL_NODE() warns in the mozilla code because the 'kind' enum is unsigned, so the check 'WEBVTT_NODE_INDEX(Kind) >= WEBVTT_NODE_INTERNAL_START' is redundant, INTERNAL_START being set to 0.