Use RTFREE_LOCKED() instead of rtfree() when releasing a reference on the

'rt' route in rtredirect() as 'rt' is always locked.

MFC after:	1 week
PR:		kern/117913
Submitted by:	Stefan Lambrev  stefan.lambrev of moneybookers.com

sys/net/route.c

@@ -404,7 +404,7 @@ rtredirect(struct sockaddr *dst,
 		error = EHOSTUNREACH;
 done:
 	if (rt)
-		rtfree(rt);
+		RTFREE_LOCKED(rt);
 out:
 	if (error)
 		rtstat.rts_badredirect++;