Channel.nicks: Raise error so we don't actually reply with the nicks.
Channel.nicks: Raise error so we don't actually reply with the nicks.

Closes: Sf#3396388
Signed-off-by: James McCoy <vega.james@gmail.com>
(cherry picked from commit 0869a8e271e9951219dcddd228bec9cb08fc291f)

Signed-off-by: Daniel Folkinshteyn <c89479571640853a547e0bfdade4423027407e94@users.sourceforge.net>

Ban3/Limnoria,mazaclub/mazabot-core,Ban3/Limnoria,ProgVal/Limnoria-test,mazaclub/mazabot-core,ProgVal/Limnoria-test