Use the actual user name instead of the nick in USER messages
Use the actual user name instead of the nick in USER messages

A valid nick may not be a valid user name on some IRC networks. Using
the nick in USER messages will then lead to a network error.

Fixes: https://bugs.freedesktop.org/33913
Reviewed-by: Olli Salli <20a519b27baa022954fba30203936bb6e51a67dc@collabora.co.uk>
Signed-off-by: Will Thompson <5822fdda638242a44ccfa68f146ccf6f257c5cbd@collabora.co.uk>

freedesktop-unofficial-mirror/telepathy__telepathy-idle,freedesktop-unofficial-mirror/telepathy__telepathy-idle,freedesktop-unofficial-mirror/telepathy__telepathy-idle