$OpenBSD: patch-images_fl_png_cxx,v 1.2 2011/07/08 20:38:01 naddy Exp $

Fix build with png-1.5.

--- images/fl_png.cxx.orig	Mon Apr 16 08:48:06 2007
+++ images/fl_png.cxx	Tue Jul  5 22:22:44 2011
@@ -31,7 +31,7 @@
 #if HAVE_LIBPNG
 extern "C"
 {
-#ifdef HAVE_LOCAL_PNG_H
+#ifdef HAVE_LIBPNG_PNG_H
 #  include "libpng/png.h"
 #else
 #  include <png.h>
@@ -62,7 +62,7 @@ bool pngImage::test(const uchar* datas, unsigned size)
 #if !HAVE_LIBPNG
   return 0;
 #else
-  return png_check_sig((png_byte*)datas, (int)size)!=0;
+  return png_sig_cmp((png_byte*)datas, 0, (size_t)size)==0;
 #endif
 }
 
