If NLS is disabled, strerror does not print the correct error string.

No binary change with NLS enabled.
ok otto millert espie

src/lib/libc/string/strerror_r.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: strerror_r.c,v 1.6 2005/08/08 08:05:37 espie Exp $ */
+/* $OpenBSD: strerror_r.c,v 1.7 2007/03/01 16:29:09 bluhm Exp $ */
 /* Public Domain <marc@snafu.org> */
 
 #ifdef NLS
@@ -83,7 +83,7 @@ __num2string(int num, int sign, int setid, char *buf, size_t buflen,
 		len = strlcpy(buf, catgets(catd, setid, num, list[num]),
 		    buflen);
 #else
-		len = strlcpy(buf, def, buflen);
+		len = strlcpy(buf, list[num], buflen);
 #endif
 		if (len >= buflen)
 			ret = ERANGE;