Updated xcf2png.c

Replaced deprecated typecasted definitions with 'NULL'.

1 files changed, 2 insertions, 2 deletions

diff --git a/xcf2png.c b/xcf2png.c
index 01c66f1..e8b5c1a 100644
--- a/xcf2png.c
+++ b/xcf2png.c
@@ -71,9 +71,9 @@ init_output(void)
   
   outfile = openout(flatspec.output_filename);
   libpng = png_create_write_struct(PNG_LIBPNG_VER_STRING,
-                                   png_voidp_NULL,
+                                   NULL,
                                    my_error_callback,
-                                   png_error_ptr_NULL);
+                                   NULL);
   if( !libpng )
     FatalUnexpected(_("Couldn't initialize libpng library"));