[PATCH libXext] Correct XShm return values.

[Adam Jackson]

On 4/10/11 9:11 PM, Peter Hutterer wrote:
> XShmAttach, XShmDetach, XShmPutImage do not return a Status but 0 or 1.
> Though the man section for XShmAttach says "if all goes well, you will get a
> non-zero status, back" this is counter to the usage of Status in Xlib
> itself where 0 means Success and no-zero specifies the specific error.
>
> XShmPixmapFormat does not return a Status but the pixmap format or 0 on
> failure.
>
> Signed-off-by: Peter Hutterer<peter.hutterer at who-t.net>

I was nervous at first, it sounded like you were changing the literal 
value returned, but you're just fixing the type to be less of a lie. 
This seems like an improvement.

Reviewed-by: Adam Jackson <ajax at redhat.com>

- ajax