[Mesa-dev] auxiliary/vl and st/vdpau, xvmc trivial fixes and cleanups

[Emil Velikov]

Hello list,

This patch-set sets the proper width/height for 442 chroma formats(Andy Furniss),
prevents all sort of chaos if create_video_buffer() fails, adds a check after
memory allocation and a few trivial oneliners to improve code readability.

Not sure how many of those are suiteable candidates for the stable branches, so
shout out if you would fancy anything :)


Cheers,
Emil