Bug#859957: natbraille: ftbfs without networking

[Chris West <solo-debianbugs@goeswhere.com>]

Source: natbraille
Version: 2.0rc3-4
User: reproducible-builds@lists.alioth.debian.org
Usertags: ftbfs


natbraille fails to build from source on machines without an internet
connection. This is generally accepted to be a policy violation:

** Utilisation du dictionnaire de coupure existant

D?but de la conversion du document ... 

java.net.UnknownHostException: www.w3.org
...
	at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown Source)
...

This happens on the reproducible-builds builder:
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/natbraille.html