Also add malloc.c as required by configure.
Reported in SF.net bug # 1899047


(tnn)

$NetBSD: patch-ac,v 1.3 2008/05/21 12:54:32 tnn Exp $

--- /dev/null	2008-04-01 06:44:07.000000000 +0200
+++ malloc.c
@@ -0,0 +1,26 @@
+/* rpl_malloc.c -- a replacement for malloc that don't accept 0 size
+   Copyright (C) 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#include <stdlib.h>
+
+void *
+rpl_malloc(size_t size)
+{
+	if (!size)
+		size++;
+	return malloc(size);
+}