[gtk+/native-layout] Fix a 64bit issue

[Tristan Van Berkom <tvb src gnome org>]

commit aaf541903b0c234f857923cfed4c6f61e16c2d60
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Mar 25 00:55:15 2010 -0400

    Fix a 64bit issue
    
    Thank you libpng, for typedef unsigned long png_uint_32.

 gdk-pixbuf/io-png.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk-pixbuf/io-png.c b/gdk-pixbuf/io-png.c
index c0374ca..43db70a 100644
--- a/gdk-pixbuf/io-png.c
+++ b/gdk-pixbuf/io-png.c
@@ -261,7 +261,7 @@ gdk_pixbuf__png_image_load (FILE *f, GError **error)
         gchar *icc_profile_base64;
         const gchar *icc_profile_title;
         const gchar *icc_profile;
-        guint icc_profile_size;
+        gulong icc_profile_size;
         guint32 retval;
         gint compression_type;
 
@@ -607,7 +607,7 @@ png_info_callback   (png_structp png_read_ptr,
         gchar *icc_profile_base64;
         const gchar *icc_profile_title;
         const gchar *icc_profile;
-        guint icc_profile_size;
+        gulong icc_profile_size;
         guint32 retval;
         gint compression_type;