[PATCH xserver] xf86XvMCScreenInit: Clear pScreenPriv->dixinfo when freeing pAdapt

[Adam Jackson]

On Wed, 2018-01-24 at 12:28 +0100, Michel Dänzer wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> Fixes double-free later in xf86XvMCCloseScreen, which would generally
> cause fireworks.
> 
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>

remote: I: patch #200379 updated using rev 75408f53d4e203e462b2f13ea4b06264f0e59ad2.
remote: I: 1 patch(es) updated to state Accepted.
To ssh://git.freedesktop.org/git/xorg/xserver
   76732f498f..75408f53d4  master -> master

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