[cairo] [patch] xcb: detach snapshot after xcb surface flush

[Chris Wilson]

On Tue, 11 Sep 2012 17:08:51 +0000, "Henry (Yu) Song - SISA" <hsong at sisa.samsung.com> wrote:
> I am not sure this is the right place to fix.  Please review.

I tackled the bug slightly differently. The original code's intention
was for xcb not to take a snapshot during finish, so I jiggle its checks
to prevent that again. Hopefully, I got it right...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre