Even if unlikely, a buggy vhost-user master might attach fds to inflight
messages. Add checks like for other types of vhost-user messages.
Fixes: d87f1a1cb7b6 ("vhost: support inflight info sharing")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>