From f9b599355c3b537bcb48f734d0a98ed1c22566d2 Mon Sep 17 00:00:00 2001
From: ilovezfs <ilovezfs@icloud.com>
Date: Tue, 12 Dec 2017 02:28:03 -0800
Subject: [PATCH] unzip: fix build with older zlib

Fixes "unzip.c:150:11: error: unknown type name 'z_crc_t'"
---
 contrib/unzip/unzip.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/contrib/unzip/unzip.c b/contrib/unzip/unzip.c
index e8b62e763..fea6e8913 100644
--- a/contrib/unzip/unzip.c
+++ b/contrib/unzip/unzip.c
@@ -41,6 +41,10 @@ woven in by Terry Thorsen 1/2003.
 #include "zlib.h"
 #include "unzip.h"
 
+#if ZLIB_VERNUM < 0x1270
+typedef unsigned long z_crc_t;
+#endif
+
 #ifdef STDC
 #  include <stddef.h>
 #  include <string.h>