From 340b8789816f7e773507ab76f0d60829eb3368cb Mon Sep 17 00:00:00 2001
From: Matthew Flatt <mflatt@racket-lang.org>
Date: Sun, 2 Jul 2017 14:27:16 -0600
Subject: [PATCH] udp-send-to: fix deallocation bug related to rktio
 refactoring

The bug caused an attempt to free NULL as an addrinfo, which is
apparently ok on many OSes, but not all.
---
 racket/src/racket/src/network.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/racket/src/racket/src/network.c b/racket/src/racket/src/network.c
index 9a559fbeb0..63440e85cb 100644
--- a/racket/src/racket/src/network.c
+++ b/racket/src/racket/src/network.c
@@ -2129,7 +2129,7 @@ static Scheme_Object *udp_send_it(const char *name, int argc, Scheme_Object *arg
   } else {
     return do_udp_send_it(name, udp,
                           SCHEME_BYTE_STR_VAL(argv[3+delta]), start, end,
-                          dest_addr, 1, 
+                          dest_addr, with_addr,
                           can_block, 1);
   }
 }