$NetBSD$

--- zip/unzip.c.orig	2005-08-14 15:49:35.000000000 +0200
+++ zip/unzip.c
@@ -15,6 +15,10 @@
 
 #include "zunzip.h"
 
+#ifndef OF
+# define OF(args)      args
+#endif
+
 #ifdef STDC
 #  include <stddef.h>
 #  include <string.h>
