[MPlayer-dev-eng] [PATCH] Direct3D draw_slice coding style fix

[Georgi Petrov]

Reimar - if you dislike the Begin/End scene movement patch, use yours.
Mine brakes frame rendering anyways. However - in the end they should
be both applied with the performance as well.

Your idea about removing is_surface_locked may be good as well, but I
think it's more clear this way... This is cosmetics as well.