libvhost-user: fix cast warnings on 32 bits

Fixes warnings:
 warning: cast to pointer from integer of different size
 [-Wint-to-pointer-cast]

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190514104126.6294-2-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
1 file changed