Use the right key.

Change-Id: Ie58e89fa0cfa7a510561bdf387125bcc5d0ba854
Reviewed-on: http://gerrit.dmdirc.com/551
Automatic-Compile: Gregory Holmes <greboid@dmdirc.com>
Reviewed-by: Gregory Holmes <greboid@dmdirc.com>

src/com/dmdirc/parser/irc/IRCParser.java

@@ -1504,7 +1504,7 @@ public class IRCParser implements SecureParser, Runnable {
             // Find any key for this channel
             final String[] keybits = bit.split(" ", 2);
             final String channelName = keybits[0];
-            final String thisKey = (keybits.length > 1) ? keybits[0] : key;
+            final String thisKey = (keybits.length > 1) ? keybits[1] : key;
 
             // Make sure we have a list to put stuff in.
             StringBuffer list = joinMap.get(thisKey);