nse: Allow 'updated' to be absent.

Fixes: https://notabug.org/maximed/scheme-gnunet/issues/4

* gnu/gnunet/nse/client.scm
  (connect)[handle-estimate]: Only call 'updated' if it isn't false.
* tests/network-size.scm
  (act-as-the-server, estimate->list): Extract from
  "Client calls call-back (and sets estimates) in-order".
  ("likewise, without 'updated' or 'connected' (issue 4)"): Test it.

1 files changed, 2 insertions, 1 deletions

diff --git a/gnu/gnunet/nse/client.scm b/gnu/gnunet/nse/client.scm
index 8ac0d8e..dccca2d 100644
--- a/gnu/gnunet/nse/client.scm
+++ b/gnu/gnunet/nse/client.scm
@@ -133,7 +133,8 @@ procedure should accept the new estimate."
            (read% /:msg:nse:estimate '(std-deviation) estimate-slice)
            (read% /:msg:nse:estimate '(timestamp) estimate-slice)))
         (atomic-box-set! estimate/box estimate)
-        (updated estimate))
+        (when updated
+          (updated estimate)))
       (define handlers
         (message-handlers
          (make-message-handler (symbol-value message-type msg:nse:estimate)