Removed (too) early removal of joining channel.

src/net/java/sip/communicator/impl/protocol/irc/IrcStack.java

@@ -520,8 +520,6 @@ public void onSuccess(IRCChannel channel)
                             .equalsIgnoreCase(chatroom.getIdentifier());
                         synchronized (joinSignal)
                         {
-                            IrcStack.this.joining.remove(chatroom
-                                .getIdentifier());
                             if (!isRequestedChatRoom)
                             {
                                 if (LOGGER.isTraceEnabled())