kernel32: add a stub for CancelSynchronousIo

[Dmitry Timoshkov]

Austin English <austinenglish at gmail.com> wrote:

> +BOOL WINAPI CancelSynchronousIo(HANDLE thread)
> +{
> +    FIXME("(%p): stub\n", thread);
> +    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
> +    return FALSE;
> +}
...
> +@ stdcall CancelSynchronousIo(ptr)

Please have a look at other .spec file entries how a thread handle (or HANDLE
in general) is supposed to be represented.

-- 
Dmitry.