Fixes issue 3637: Topic bar doesn't update correctly when someone else changes the topic Change-Id: I54f99aa6d06c0a6565d3218dc48da16ad890a389 Reviewed-on: http://gerrit.dmdirc.com/657 Reviewed-by: Shane Mc Cormack <shane@dmdirc.com> Automatic-Compile: Gregory Holmes <greg@dmdirc.com>