--- hp2xx-3.4.4.old/sources/png.c
+++ hp2xx-3.4.4/sources/png.c
@@ -36,7 +36,7 @@
 	}
 
 	/* 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;
 	}