Merge commit '7cb9296d'

* commit '7cb9296d':
  webp: Fix alpha decoding

This commit is a noop.

[13:09:40] <jamrial> jkqxz: do we need 7cb9296d from libav?
[13:11:20] <+wm4> we had vaapi vp8 for a while in ffmpeg, so I guess not
[13:11:58] <@jkqxz> It's more fallout from the VP8 hwaccel which never got merged. Some people hated on that part of the patch and I wasn't really interested in pursuing it further.
[13:13:02] <jamrial> it wasn't merged?
[13:13:21] <@jkqxz> wm4:  There is no VP8 decode hwaccel in ffmpeg (there is encode).
[13:13:25] <+wm4> ah
[13:14:00] <jamrial> what do i do then? and shouldn't that be merged at some point?
[13:14:37] <@jkqxz> It should.
[13:14:53] <@jkqxz> Skip the patch now, though.
[13:16:30] <jamrial> ok, thanks
Merged-by: James Almer <jamrial@gmail.com>