pidgin/purple-plugin-pack

plugin_pack.py: another python3 compat fix in show_usage

2017-04-06, dx
18e221cca584
plugin_pack.py: another python3 compat fix in show_usage

More specifically, fixing something that was broken in a previous python3
compat attempt by someone else.
[Conversation Badger]
type=default
depends=pidgin
provides=convbadger
summary=Badges conversations with the protocol icon.
description=%(summary)s
authors=Gary Kramlich
introduced=2.0.0
notes=Completed for 2.1.0, buildsystem issues fixed in 2.1.1.