Fix #3848 by closing the descriptor on error.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/anet.c b/src/anet.c
index 993615601..53a56b0d2 100644
--- a/src/anet.c
+++ b/src/anet.c
@@ -464,7 +464,7 @@ 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;
 
@@ -493,6 +493,7 @@ 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);