Index: subr_hints.c
===================================================================
RCS file: /usr/cvs/src/sys/kern/subr_hints.c,v
retrieving revision 1.9
diff -u -r1.9 subr_hints.c
--- subr_hints.c	2 Jul 2003 16:01:38 -0000	1.9
+++ subr_hints.c	22 Feb 2005 19:20:56 -0000
@@ -174,7 +174,7 @@
 	if (ret_name)
 		*ret_name = s;
 	s = index(s, '.') + 1;		/* start of unit */
-	if (ret_namelen)
+	if (ret_namelen && ret_name)
 		*ret_namelen = s - *ret_name - 1; /* device length */
 	if (ret_unit)
 		*ret_unit = r_unit;
@@ -182,7 +182,7 @@
 	if (ret_resname)
 		*ret_resname = s;
 	s = index(s, '=') + 1;		/* start of value */
-	if (ret_resnamelen)
+	if (ret_resnamelen && ret_resname)
 		*ret_resnamelen = s - *ret_resname - 1; /* value len */
 	if (ret_value)
 		*ret_value = s;