$NetBSD: patch-aa,v 1.3 2000/08/31 12:37:02 dmcmahill Exp $

--- png.c.orig	Wed Jan 26 08:03:29 2000
+++ png.c	Thu Aug 31 08:08:48 2000
@@ -5,4 +5,5 @@
 #include "to_png.h"
 #include <png.h>
+#include <stdlib.h>
 
 #define PDNCOL 8