libc: make some more use of the nitems() macro.

We have an nitems() macro in the <sys/param.h> header that is
convenient to re-use as it makes things easier to read.
Given that it is available already without adding additional
headers and other parts of libc already use it, extend a bit
more its use.

3 files changed, 3 insertions, 3 deletions

diff --git a/lib/libc/resolv/herror.c b/lib/libc/resolv/herror.c
index d987609..aeb308c 100644
--- a/lib/libc/resolv/herror.c
+++ b/lib/libc/resolv/herror.c
@@ -76,7 +76,7 @@ const char *h_errlist[] = {
 	"Unknown server error",			/*%< 3 NO_RECOVERY */
 	"No address associated with name",	/*%< 4 NO_ADDRESS */
 };
-const int h_nerr = { sizeof h_errlist / sizeof h_errlist[0] };
+const int h_nerr = { nitems(h_errlist) };
 
 #undef	h_errno
 int	h_errno;
diff --git a/lib/libc/resolv/res_mkquery.c b/lib/libc/resolv/res_mkquery.c
index 0d45e34..349160f 100644
--- a/lib/libc/resolv/res_mkquery.c
+++ b/lib/libc/resolv/res_mkquery.c
@@ -133,7 +133,7 @@ res_nmkquery(res_state statp,
 	dpp = dnptrs;
 	*dpp++ = buf;
 	*dpp++ = NULL;
-	lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
+	lastdnptr = dnptrs + nitems(dnptrs);
 	/*
 	 * perform opcode specific processing
 	 */
diff --git a/lib/libc/resolv/res_mkupdate.c b/lib/libc/resolv/res_mkupdate.c
index 3ebb242..79402a7 100644
--- a/lib/libc/resolv/res_mkupdate.c
+++ b/lib/libc/resolv/res_mkupdate.c
@@ -127,7 +127,7 @@ res_nmkupdate(res_state statp, ns_updrec *rrecp_in, u_char *buf, int buflen) {
 	dpp = dnptrs;
 	*dpp++ = buf;
 	*dpp++ = NULL;
-	lastdnptr = dnptrs + sizeof dnptrs / sizeof dnptrs[0];
+	lastdnptr = dnptrs + nitems(dnptrs);
 
 	if (rrecp_start == NULL)
 		return (-5);