libpfctl: fix pfctl_kill_states()

735748f changed the output of the states so that the creator id
endianness would be consistent. This means that we need to convert the
host endianness creatorid back to big-endian before we give it to the
kernel.

MFC after:	3 weeks
Sponsored by:	Rubicon Communications, LLC ("Netgate")

(cherry picked from commit 6f47a72)

lib/libpfctl/libpfctl.c

@@ -758,7 +758,7 @@ pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name,
 	nv = nvlist_create(0);
 
 	nvlist_add_number(nv, "id", cmp->id);
-	nvlist_add_number(nv, "creatorid", cmp->creatorid);
+	nvlist_add_number(nv, "creatorid", htonl(cmp->creatorid));
 	nvlist_add_number(nv, "direction", cmp->direction);
 
 	nvlist_add_nvlist(nvl, name, nv);