[FFmpeg-cvslog] Force linking against user32 if dxva2 is enabled.

[Carl Eugen Hoyos]

compn <tempn <at> mi.rr.com> writes:

> > +    prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
> 
> <j-b> Why do you need user32?

For something called GetShellWindow that I have 
never heard about.

Carl Eugen