$NetBSD: patch-aa,v 1.4 2016/11/06 15:39:28 adam Exp $

Add OF() compat macro.

--- src/includes/unzip.h.orig	2016-11-03 21:25:43.000000000 +0000
+++ src/includes/unzip.h
@@ -49,6 +49,14 @@
 #if !defined(_unz_H) && defined(HAVE_ZLIB_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