[src/trunk]: src/usr.bin/systat avoid null pointer access on ":show".

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b4638c9151ab
branches:  trunk
changeset: 480144:b4638c9151ab
user:      itojun <itojun%NetBSD.org@localhost>
date:      Wed Jan 05 11:48:21 2000 +0000

description:
avoid null pointer access on ":show".

diffstat:

 usr.bin/systat/netcmds.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r abb6b6a458d2 -r b4638c9151ab usr.bin/systat/netcmds.c
--- a/usr.bin/systat/netcmds.c  Wed Jan 05 11:32:43 2000 +0000
+++ b/usr.bin/systat/netcmds.c  Wed Jan 05 11:48:21 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netcmds.c,v 1.12 2000/01/04 15:12:42 itojun Exp $      */
+/*     $NetBSD: netcmds.c,v 1.13 2000/01/05 11:48:21 itojun Exp $      */
 
 /*-
  * Copyright (c) 1980, 1992, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)netcmds.c  8.1 (Berkeley) 6/6/93";
 #endif
-__RCSID("$NetBSD: netcmds.c,v 1.12 2000/01/04 15:12:42 itojun Exp $");
+__RCSID("$NetBSD: netcmds.c,v 1.13 2000/01/05 11:48:21 itojun Exp $");
 #endif /* not lint */
 
 /*
@@ -111,7 +111,7 @@
        char *args;
 {
        move(CMDLINE, 0); clrtoeol();
-       if (*args == '\0') {
+       if (!args || *args == '\0') {
                showprotos();
                showhosts();
                showports();