$OpenBSD: patch-lib_loop_wchar_h,v 1.2 2008/05/28 20:03:13 naddy Exp $
--- lib/loop_wchar.h.orig	Mon Apr 11 12:03:36 2005
+++ lib/loop_wchar.h	Mon Apr 11 13:52:35 2005
@@ -39,8 +39,10 @@
 #  endif
 # endif
 #else
-# ifndef mbstate_t
+# if !HAVE_MBSTATE_T
+#  ifndef mbstate_t
    typedef int mbstate_t;
+#  endif
 # endif
 #endif