[src/trunk]: src/lib/libc/ssp Free malloc()ed buffer in error case. Found by ...

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

details:   https://anonhg.NetBSD.org/src/rev/637537d72344
branches:  trunk
changeset: 750884:637537d72344
user:      wiz <wiz%NetBSD.org@localhost>
date:      Sun Jan 17 23:13:32 2010 +0000

description:
Free malloc()ed buffer in error case. Found by cppcheck.

diffstat:

 lib/libc/ssp/gets_chk.c |  8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r 1180cc0e5449 -r 637537d72344 lib/libc/ssp/gets_chk.c
--- a/lib/libc/ssp/gets_chk.c   Sun Jan 17 23:12:30 2010 +0000
+++ b/lib/libc/ssp/gets_chk.c   Sun Jan 17 23:13:32 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gets_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $      */
+/*     $NetBSD: gets_chk.c,v 1.6 2010/01/17 23:13:32 wiz Exp $ */
 
 /*-
  * Copyright (c) 2006 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: gets_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $");
+__RCSID("$NetBSD: gets_chk.c,v 1.6 2010/01/17 23:13:32 wiz Exp $");
 
 /*LINTLIBRARY*/
 
@@ -54,8 +54,10 @@
        if ((abuf = malloc(slen + 1)) == NULL)
                return gets(buf);
 
-       if (fgets(abuf, (int)(slen + 1), stdin) == NULL)
+       if (fgets(abuf, (int)(slen + 1), stdin) == NULL) {
+               free(abuf);
                return NULL;
+       }
 
        len = strlen(abuf);
        if (len > 0 && abuf[len - 1] == '\n')