Fixed proto_tls FD closing

When sending through a TLS connection, do not close the FD if already in our process
x

modules/proto_tls/proto_tls.c

@@ -1391,11 +1391,17 @@ static int proto_tls_send(struct socket_info* send_sock,
 	if (n<0){
 		LM_ERR("failed to send\n");
 		c->state=S_CONN_BAD;
+		if (c->proc_id != process_no)
+			close(fd);
 		tcp_conn_release(c, 0);
-		close(fd);
 		return -1;
 	}
-	close(fd);
+
+	/* only close the FD if not already in the context of our process
+	either we just connected, or main sent us the FD */
+	if (c->proc_id != process_no)
+		close(fd);
+
 	tcp_conn_release(c, 0);
 	return n;
 }