fix some compilation issues on newer gcc

Author: vmaffione

ipfw/dummynet.c

@@ -245,7 +245,7 @@ print_flowset_parms(struct dn_fs *fs, char *prefix)
 		    fs->max_th,
 		    1.0 * fs->max_p / (double)(1 << SCALE_RED));
 		if (fs->flags & DN_IS_ECN)
-			strncat(red, " (ecn)", 6);
+			strncat(red, " (ecn)", 7);
 	} else
 		sprintf(red, "droptail");
 

sys/netpfil/ipfw/ip_dn_glue.c

@@ -631,7 +631,7 @@ dn_c_copy_pipe(struct dn_schk *s, struct copy_args *a, int nq)
 	if (!is7) {
 		if (s->profile) {
 			struct dn_profile *pf = s->profile;
-			strncpy(pipe8->name, pf->name, sizeof(pf->name));
+			strncpy(pipe8->name, pf->name, sizeof(pipe8->name));
 			pipe8->loss_level = pf->loss_level;
 			pipe8->samples_no = pf->samples_no;
 		}