Index: sources/png.c

===================================================================

--- sources/png.c.orig

+++ sources/png.c

@@ -4,6 +4,7 @@

 #include <stdio.h>

 #include <stdlib.h>

+#include <zlib.h>

 #include "to_png.h"

 #include <png.h>

@@ -38,7 +39,7 @@ void pdImagePNG(im, fd)

 	}

 	/* set up error handlimg for libpng */

-	if (setjmp(png_ptr->jmpbuf))

+	if (setjmp(png_jmpbuf(png_ptr)))

 	{    

 		png_destroy_write_struct(&png_ptr, &info_ptr);

 		return;

@@ -98,7 +99,7 @@ void pdImagePNG(im, fd)

 	png_write_end(png_ptr, info_ptr);

 	/* if you malloced the palette, free it here */

-	free(info_ptr->palette);

+	png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, -1);

 	/* if you allocated any text comments, free them here */