bgpd: kill unused variable in bgp_socket()

Signed-off-by: Lou Berger <lberger@labn.net>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/bgpd/bgp_network.c b/bgpd/bgp_network.c
index 81a6a79..d11cbc3 100644
--- a/bgpd/bgp_network.c
+++ b/bgpd/bgp_network.c
@@ -556,7 +556,7 @@
   int sock;
   int socklen;
   struct sockaddr_in sin;
-  int ret, en;
+  int ret;
 
   sock = socket (AF_INET, SOCK_STREAM, 0);
   if (sock < 0)