From c9c04b11b971bb0598307cf2aafe8954e7785641 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 18 Apr 2017 16:24:06 +0200
Subject: [PATCH] Fix #3848 by closing the descriptor on error.

---
 src/anet.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/anet.c b/src/anet.c
index ef1711d0..e16ce131 100644
--- a/src/anet.c
+++ b/src/anet.c
@@ -462,7 +462,7 @@ static int anetV6Only(char *err, int s) {
 
 static int _anetTcpServer(char *err, int port, char *bindaddr, int af, int backlog)
 {
-    int s, rv;
+    int s = -1, rv;
     char _port[6];  /* strlen("65535") */
     struct addrinfo hints, *servinfo, *p;
 
@@ -491,6 +491,7 @@ static int _anetTcpServer(char *err, int port, char *bindaddr, int af, int backl
     }
 
 error:
+    if (s != -1) close(s);
     s = ANET_ERR;
 end:
     freeaddrinfo(servinfo);