* riece-filter.el (riece-sentinel): Close process even if

* riece-filter.el (riece-sentinel): Close process even if
riece-reconnect-with-password == t.
(riece-handle-message): Catch errors occured in hooks.

* riece-server.el (riece-open-server): Reuse server buffer.
(riece-close-server-process): Delete process even if process is
not running.

* riece.el (riece): Don't set riece-server.