$OpenBSD: patch-src_Util_cpp,v 1.1 2011/07/08 20:38:01 naddy Exp $

Fix build with png-1.5.

--- src/Util.cpp.orig	Tue Jul  5 21:18:42 2011
+++ src/Util.cpp	Tue Jul  5 21:19:02 2011
@@ -79,7 +79,7 @@ bool utilWritePNGFile(const char *fileName, int w, int
     return false;
   }
 
-  if(setjmp(png_ptr->jmpbuf)) {
+  if(setjmp(png_jmpbuf(png_ptr))) {
     png_destroy_write_struct(&png_ptr,NULL);
     fclose(fp);
     return false;
