[src/trunk]: src/usr.sbin/pstat Fix memory leak in error case. Found by cppch...

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

details:   https://anonhg.NetBSD.org/src/rev/c629289b8af7
branches:  trunk
changeset: 760400:c629289b8af7
user:      wiz <wiz%NetBSD.org@localhost>
date:      Tue Jan 04 09:58:03 2011 +0000

description:
Fix memory leak in error case. Found by cppcheck.

diffstat:

 usr.sbin/pstat/pstat.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r a08be9c011f1 -r c629289b8af7 usr.sbin/pstat/pstat.c
--- a/usr.sbin/pstat/pstat.c    Tue Jan 04 09:49:16 2011 +0000
+++ b/usr.sbin/pstat/pstat.c    Tue Jan 04 09:58:03 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pstat.c,v 1.116 2009/11/19 02:52:54 enami Exp $        */
+/*     $NetBSD: pstat.c,v 1.117 2011/01/04 09:58:03 wiz Exp $  */
 
 /*-
  * Copyright (c) 1980, 1991, 1993, 1994
@@ -39,7 +39,7 @@
 #if 0
 static char sccsid[] = "@(#)pstat.c    8.16 (Berkeley) 5/9/95";
 #else
-__RCSID("$NetBSD: pstat.c,v 1.116 2009/11/19 02:52:54 enami Exp $");
+__RCSID("$NetBSD: pstat.c,v 1.117 2011/01/04 09:58:03 wiz Exp $");
 #endif
 #endif /* not lint */
 
@@ -926,6 +926,7 @@
                err(1, "malloc");
        if (sysctl(mib, 6, buf + offset, &len, NULL, 0) == -1) {
                warn("sysctl: 2nd KERN_FILE2");
+               free(buf);
                return (-1);
        }
        *abuf = buf;