Fix an edge case where the connect answer is not zero and not error.

The tor proxy might want auth 0x2 or answer what ever not defined
in https://tools.ietf.org/html/rfc1928.

Changelog-Fixed: TOR: We don't send any further request if the return code of connect is not zero or error.

Signed-off-by: Saibato <saibato.naga@pm.me>

connectd/tor.c

@@ -140,6 +140,7 @@ static struct io_plan *io_tor_connect_after_resp_to_connect(struct io_conn
 			     connect->host);
 		return io_close(conn);
 	}
+	if (connect->buffer[1] == '\0') {
 		/* make the V5 request */
 		connect->hlen = strlen(connect->host);
 		connect->buffer[0] = SOCKS_V5;
@@ -157,6 +158,12 @@ static struct io_plan *io_tor_connect_after_resp_to_connect(struct io_conn
 		return io_write(conn, connect->buffer,
 				SOCK_REQ_V5_HEADER_LEN + connect->hlen,
 				connect_out, connect);
+	} else {
+		status_debug("Connected out for %s error: unexpected connect answer %0x from the tor socks5 proxy",
+				connect->host,
+				connect->buffer[1]);
+		return io_close(conn);
+	}
 }
 
 static struct io_plan *io_tor_connect_after_req_to_connect(struct io_conn *conn,