winhttp: Implement WINHTTP_OPTION_UNLOAD_NOTIFY_EVENT.

[Dmitry Timoshkov]

Huw Davies <huw at codeweavers.com> wrote:

> +    case WINHTTP_OPTION_UNLOAD_NOTIFY_EVENT:
> +        TRACE("WINHTTP_OPTION_UNLOAD_NOTIFY_EVENT: %p\n", *(HANDLE *)buffer);
> +        session->unload_event = *(HANDLE *)buffer;
> +        return TRUE;

I admit, that adding another case that doesn't check input buffer size
doesn't change much, but it has to stop at some point, rather sooner than
later.

-- 
Dmitry.