[dx8-8] Silence fixme when behaviour 'works'

["Ann and Jason Edmeades" <us@the-edmeades.demon.co.uk>]

Changelog

Silence index buffer lock + offset fixme to a trace because the behaviour
under that scenario works, and it occurs very frequently in games!

Jason

Attachment: dx8-8.indexbuf.20030420.patch
Description: Binary data