Gotham: backport fix dvdplayer

That's a follow up of: https://github.com/xbmc/xbmc/commit/9fabae2973792279500586e3b98b522c648ea6a6 which was not PRd (by accident) but also should go into Gotham - 13.2 release.

Warning this one is for Gotham - as it's already in master.