$OpenBSD: patch-src_pngsize_c,v 1.1 2004/06/08 20:21:24 danh Exp $
--- src/pngsize.c.orig	2004-04-06 17:38:12.000000000 -0400
+++ src/pngsize.c	2004-06-08 12:49:18.000000000 -0400
@@ -5,6 +5,7 @@
  *****************************************************************************/
 
 #include <png.h>
+#include "rrd_tool.h"
 
 int
 PngSize(FILE *fd, long *width, long *height)