$NetBSD: patch-ab,v 1.3 2010/06/13 22:44:42 wiz Exp $

--- src/_png.cpp.orig	2009-08-01 19:14:01.000000000 +0000
+++ src/_png.cpp
@@ -290,7 +290,7 @@ _png_module::read_png(const Py::Tuple& a
 
   //free the png memory
   png_read_end(png_ptr, info_ptr);
-  png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
+  png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
   fclose(fp);
   for (row = 0; row < height; row++)
     delete [] row_pointers[row];
