[src/trunk]: src/libexec/ftpd CID 603440: ensure that closing socket exists

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

details:   https://anonhg.NetBSD.org/src/rev/e7e8eff4a087
branches:  trunk
changeset: 346574:e7e8eff4a087
user:      shm <shm%NetBSD.org@localhost>
date:      Tue Jul 19 21:25:38 2016 +0000

description:
CID 603440: ensure that closing socket exists

diffstat:

 libexec/ftpd/ftpd.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 07b2fa7296d2 -r e7e8eff4a087 libexec/ftpd/ftpd.c
--- a/libexec/ftpd/ftpd.c       Tue Jul 19 18:54:45 2016 +0000
+++ b/libexec/ftpd/ftpd.c       Tue Jul 19 21:25:38 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ftpd.c,v 1.202 2015/08/10 07:32:49 shm Exp $   */
+/*     $NetBSD: ftpd.c,v 1.203 2016/07/19 21:25:38 shm Exp $   */
 
 /*
  * Copyright (c) 1997-2009 The NetBSD Foundation, Inc.
@@ -97,7 +97,7 @@
 #if 0
 static char sccsid[] = "@(#)ftpd.c     8.5 (Berkeley) 4/28/95";
 #else
-__RCSID("$NetBSD: ftpd.c,v 1.202 2015/08/10 07:32:49 shm Exp $");
+__RCSID("$NetBSD: ftpd.c,v 1.203 2016/07/19 21:25:38 shm Exp $");
 #endif
 #endif /* not lint */
 
@@ -1967,7 +1967,8 @@
        t = errno;
        if (! dropprivs)
                (void) seteuid((uid_t)pw->pw_uid);
-       (void) close(s);
+       if (s >= 0)
+               (void) close(s);
        errno = t;
        return (NULL);
 }