$NetBSD: patch-aa,v 1.3 2016/04/21 11:31:22 jperkin Exp $

Add OF() compat macro.

--- src/includes/unzip.h.orig	2003-03-30 14:39:27.000000000 +0100
+++ src/includes/unzip.h
@@ -49,6 +49,14 @@
 #ifndef _unz_H
 #define _unz_H
 
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif