Fix build under NetBSD older than today's NetBSD-current.

misc/dialog/distinfo

@@ -1,5 +1,6 @@
-$NetBSD: distinfo,v 1.43 2015/05/28 06:29:10 wiz Exp $
+$NetBSD: distinfo,v 1.44 2015/05/28 07:50:33 tron Exp $
 
 SHA1 (dialog-1.2-20150513.tgz) = 62a76ea7e8a205c4a20e265c34c1b7674fbe0e34
 RMD160 (dialog-1.2-20150513.tgz) = a59d3de306ff24add3f00db305b74bb0b07fd860
 Size (dialog-1.2-20150513.tgz) = 497554 bytes
+SHA1 (patch-trace.c) = 9ada0df3808c2814404bc30933ec9d159d560265

misc/dialog/patches/patch-trace.c

@@ -0,0 +1,16 @@
+$NetBSD: patch-trace.c,v 1.1 2015/05/28 07:50:33 tron Exp $
+
+Fix build failure caused by bad definition of "wunctrl" macro under NetBSD
+which has been fixed in NetBSD-current.
+
+--- trace.c.orig	2011-10-18 11:47:26.000000000 +0100
++++ trace.c	2015-05-28 08:47:19.000000000 +0100
+@@ -93,7 +93,7 @@
+ 			wchar_t *uc;
+ 
+ 			if (win_wch(win, &cch) == ERR
+-			    || (uc = wunctrl(&cch)) == 0
++			    || (uc = wunctrl((&cch))) == 0
+ 			    || uc[1] != 0
+ 			    || wcwidth(uc[0]) <= 0) {
+ 			    buffer[0] = '.';