--- ncarg2d/src/libncarg/ezmap/mapngb.c.orig	2010-07-24 14:53:37.000000000 -0500
+++ ncarg2d/src/libncarg/ezmap/mapngb.c	2011-01-22 03:59:02.000000000 -0600
@@ -78,7 +78,7 @@
   png_init_io(png_ptr,fp);
   png_read_info(png_ptr,read_info_ptr);
   png_get_IHDR(png_ptr,read_info_ptr,&width,&height,&bit_depth,
-               &color_type,&interlace_type,int_p_NULL,int_p_NULL);
+               &color_type,&interlace_type,(int*)NULL,(int*)NULL);
   channels=png_get_channels(png_ptr,read_info_ptr);
   rowbytes=png_get_rowbytes(png_ptr,read_info_ptr);
   if (bit_depth<8) {png_set_packing(png_ptr);}