[PATCH xserver] prime: Clear PixmapDirtyUpdateRec::damage when it's destroyed

[Adam Jackson]

On Thu, 2017-02-16 at 16:13 +0900, Michel Dänzer wrote:
> > From: Michel Dänzer <michel.daenzer at amd.com>
> 
> The root window, and by extension any damage records referencing it,
> may be destroyed before shared pixmaps referencing it, which resulted in
> use-after-free / double-free in PixmapStopDirtyTracking.
> 
> Fixes: b5b292896f64 ("prime: Sync shared pixmap from root window instead of screen pixmap")
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>

Looks good, thanks!

remote: I: patch #139161 updated using rev a6566f9e4dbf9ea9568a14e22cb5d004e10dbd4d.
remote: I: 1 patch(es) updated to state Accepted.
To ssh://git.freedesktop.org/git/xorg/xserver
   371ff0c..a6566f9  master -> master

- ajax