$NetBSD: patch-jc,v 1.1 2012/07/15 14:30:36 alnsn Exp $
Add missing #include <cstddef> for ptrdiff_t.

--- src/tools/qvaluelist.h.orig	2007-02-02 14:01:04.000000000 +0000
+++ src/tools/qvaluelist.h
@@ -45,6 +45,7 @@
 #endif // QT_H
 
 #ifndef QT_NO_STL
+#include <cstddef>
 #include <iterator>
 #include <list>
 #endif