From 0546aa1b97c50f1598be549123d1dcbf8f7b230a Mon Sep 17 00:00:00 2001
From: Hiroki Sato <hrs@FreeBSD.org>
Date: Sat, 11 Oct 2014 23:08:00 +0000
Subject: [PATCH] Fix off-by-one.

MFC after:	1 day
---
 usr.sbin/rtadvd/advcap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/rtadvd/advcap.c b/usr.sbin/rtadvd/advcap.c
index 7280f4097d66..542e06649f92 100644
--- a/usr.sbin/rtadvd/advcap.c
+++ b/usr.sbin/rtadvd/advcap.c
@@ -149,9 +149,9 @@ getent(char *bp, char *name, const char *cfile)
 				}
 				break;
 			}
-			if (cp >= bp + BUFSIZ) {
+			if (cp >= bp + BUFSIZ - 1) {
 				write(STDERR_FILENO, "Remcap entry too long\n",
-				      23);
+				    22);
 				break;
 			} else
 				*cp++ = c;