$NetBSD: patch-aa,v 1.3 2011/01/16 15:07:16 wiz Exp $

Fix to build with png-1.5.

--- pdftexdir/writeimg.c.orig   2010-05-02 13:21:48.000000000 +0000
+++ texk/web2c/pdftexdir/writeimg.c
@@ -137,7 +137,7 @@ integer imagecolordepth(integer img)
 {
     switch (img_type(img)) {
     case IMAGE_TYPE_PNG:
-        return png_info(img)->bit_depth;
+        return png_get_bit_depth(png_ptr(img), png_info(img));
     case IMAGE_TYPE_JPG:
         return jpg_ptr(img)->bits_per_component;
     case IMAGE_TYPE_JBIG2:
@@ -389,7 +389,7 @@ void deleteimage(integer img)
         epdf_delete();
         break;
     case IMAGE_TYPE_PNG:
-        xfclose((FILE *) png_ptr(img)->io_ptr, cur_file_name);
+        xfclose((FILE *) png_get_io_ptr(png_ptr(img)), cur_file_name);
         png_destroy_read_struct(&(png_ptr(img)), &(png_info(img)), NULL);
         break;
     case IMAGE_TYPE_JPG: