[patch] net/quagga: bgpd: fix length calculation of multi-segment AS_PATH UPDATE messages

[Matthias Ferdinand <mf+ml.pkgsrc-users%netzwerkagentursaarland.de@localhost>]

Hello,

pkgsrc quagga (bgpd) seems to also be affected by the AS-PATH UPDATE
message length calculation bug
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html

I attached the patch, please consider for inclusion.

Regards
Matthias Ferdinand

$NetBSD$

https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html,
[quagga-dev 16660] [PATCH] bgpd: fix length calculation of multi-segment AS_PATH UPDATE messages

--- bgpd/bgp_aspath.c.orig	2016-03-15 23:17:17.000000000 +0000
+++ bgpd/bgp_aspath.c
@@ -904,7 +904,7 @@ aspath_put (struct stream *s, struct asp
               assegment_header_put (s, seg->type, AS_SEGMENT_MAX);
               assegment_data_put (s, seg->as, AS_SEGMENT_MAX, use32bit);
               written += AS_SEGMENT_MAX;
-              bytes += ASSEGMENT_SIZE (written, use32bit);
+              bytes += ASSEGMENT_SIZE (AS_SEGMENT_MAX, use32bit);
             }
           
           /* write the final segment, probably is also the first */