[PATCH] user32: do not call NULL message callback

[Fabian Bieler]

On Saturday 24 February 2007 17:30, you wrote:
> Fabian Bieler wrote:
> > Windows silently ignores NULL pointers supplied to SendMessageCallback as
> > callback function.
>
> A testcase would be nice.
>
> Felix
The only way I know of to test this behavior would be to pass a NULL pointer 
as callback. Naturally this results in a segfault without this patch. Is this 
okay for a testcase?