[src/trunk]: src/usr.bin/make/lst.lib Don't SEGV when passed NULL for list.

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

details:   https://anonhg.NetBSD.org/src/rev/cde06ab721ed
branches:  trunk
changeset: 791343:cde06ab721ed
user:      sjg <sjg%NetBSD.org@localhost>
date:      Thu Nov 14 00:01:28 2013 +0000

description:
Don't SEGV when passed NULL for list.

diffstat:

 usr.bin/make/lst.lib/lstMember.c |  9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diffs (36 lines):

diff -r 9a056c43c021 -r cde06ab721ed usr.bin/make/lst.lib/lstMember.c
--- a/usr.bin/make/lst.lib/lstMember.c  Wed Nov 13 23:58:51 2013 +0000
+++ b/usr.bin/make/lst.lib/lstMember.c  Thu Nov 14 00:01:28 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $       */
+/*     $NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $       */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -33,14 +33,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $";
+static char rcsid[] = "$NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)lstMember.c        8.1 (Berkeley) 6/6/93";
 #else
-__RCSID("$NetBSD: lstMember.c,v 1.13 2009/01/23 21:26:30 dsl Exp $");
+__RCSID("$NetBSD: lstMember.c,v 1.14 2013/11/14 00:01:28 sjg Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -58,6 +58,9 @@
     List               list = l;
     ListNode   lNode;
 
+    if (list == NULL) {
+       return NULL;
+    }
     lNode = list->firstPtr;
     if (lNode == NULL) {
        return NULL;