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

Fix build with png-1.5.

--- src/screenshot.cpp.orig	Tue Jul  5 18:02:06 2011
+++ src/screenshot.cpp	Tue Jul  5 18:02:25 2011
@@ -159,7 +159,7 @@ Screenshot::save_png(const std::string& filename, uint
       return;
     }
 
-  if (setjmp(png_ptr->jmpbuf))
+  if (setjmp(png_jmpbuf(png_ptr)))
     {
       // If we get here, we had a problem reading the file
       fclose(fp);