this fixes the following backtrace:

Exception happened during processing of request from ('127.0.0.1', 41192)
Traceback (most recent call last):
  File /usr/lib/python2.7/SocketServer.py, line 295, in _handle_request_noblock
    self.process_request(request, client_address)
  File /usr/lib/python2.7/SocketServer.py, line 321, in process_request
    self.finish_request(request, client_address)
  File /usr/lib/python2.7/SocketServer.py, line 334, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File /usr/lib/python2.7/SocketServer.py, line 649, in __init__
    self.handle()
  File ./irkerd, line 820, in handle
    irker.handle(line.strip())
  File ./irkerd, line 786, in handle
    self.servers[target.server()].dispatch(target.channel, message, target.key, quit_after=quit_after)
  File ./irkerd, line 641, in dispatch
    eligibles[0].enqueue(channel, message, key)
TypeError: enqueue() takes exactly 5 arguments (4 given)

when running: ./irk irker-test test

...but, alas, the server doesn't echo pings back to their sources.

...if we could see message traffic!

...immediate mode doesn't need it.

We can now send messages with -i but we don't ger clean termination
afterwards yet.

Signed-off-by: Eric S. Raymond <esr@thyrsus.com>

Signed-off-by: Eric S. Raymond <esr@thyrsus.com>

Signed-off-by: Eric S. Raymond <esr@thyrsus.com>

00:07:27   AI0867 | esr: it reproduces on git head                   │
00:07:42   AI0867 | ./irk irc://chat.freendoe.net/foo                │
00:07:45   AI0867 | that's sufficient                                │
00:08:01      esr | OK, please email me a description of how to      │
                  | reproduce, I'll fix it.                          │
00:08:39      esr | Oh.  Is therec anything special about that       │
                  | channel?                                         │
00:08:42   AI0867 | no                                               │
00:08:48   AI0867 | any incorrect servername will do                 │
00:08:56   AI0867 | it then attempts to quit the server              │
00:09:01   AI0867 | and tries to send a QUIT                         │
00:09:06   AI0867 | which throws an exception                        │
00:09:10   AI0867 | so it tries to quit the server                   │

Signed-off-by: Eric S. Raymond <esr@thyrsus.com>