Fixes nicklist and topicbar being empty on channel join

Change-Id: Ib4cb9e6fc1222eddc8dafab30104b951f8d0ae41
Reviewed-on: http://gerrit.dmdirc.com/1167
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

src/com/dmdirc/addons/ui_swing/components/TopicBar.java

@@ -193,7 +193,7 @@ public class TopicBar extends JComponent implements ActionListener,
         topicText.setEditable(false);
         topicCancel.setVisible(false);
         setColours();
-        validateTopic();
+        topicChanged(channel, channel.getCurrentTopic());
     }
 
     /** {@inheritDoc} */

src/com/dmdirc/addons/ui_swing/components/frames/ChannelFrame.java

@@ -111,6 +111,8 @@ public final class ChannelFrame extends InputTextFrame implements ActionListener
 
         identity = IdentityManager.getChannelConfig(getChannel().getServer().
                 getNetwork(), getChannel().getChannelInfo().getName());
+        updateNames(((Channel) getContainer()).getChannelInfo()
+                .getChannelClients());
     }
 
     /**