[PATCH xserver] composite: Fix use-after-free in compReparentWindow

[Keith Packard]

Peter Harris <pharris at opentext.com> writes:

> If an implicitly redirected window is unredirected by the reparent
> operation, cw will be a stale pointer.
>
> Signed-off-by: Peter Harris <pharris at opentext.com>

Reviewed-by: Keith Packard <keithp at keithp.com>

-- 
-keith
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