$OpenBSD: patch-contrib_unzip_unzip_c,v 1.1 2018/04/23 23:07:24 bcallah Exp $

This is missing from our zlib.

Index: contrib/unzip/unzip.c
--- contrib/unzip/unzip.c.orig
+++ contrib/unzip/unzip.c
@@ -122,6 +122,7 @@ typedef struct
     int   raw;
 } file_in_zip_read_info_s;
 
+typedef unsigned long z_crc_t;
 
 /* unz_s contain internal information about the zipfile
 */
