fix code style

no code changed in this patch

Signed-off-by: Dunrong Huang <riegamaths@gmail.com>
irc: Handle login success/failed.

If we success/failed to login to irc server, notify UI layer.

Signed-off-by: Dunrong Huang <riegamaths@gmail.com>
irc: Handle login success/failed.

This patch just implements the needed interface fuctions with null content.

Signed-off-by: Dunrong Huang <riegamaths@gmail.com>