[wicd-curses]Unhandle expection in setup_dbus

Hi,
    I have been using wicd and wicd-curses for almost one years in my Archlinux. It works great and helps me a lot. But I also find out that if I execute wicd-curses when wicd does not start, I got stuff like:

$ wicd-curses

Can't connect to the daemon, trying to start it automatically...
Traceback (most recent call last):
  File "/usr/share/wicd/curses/wicd-curses.py", line 1043, in <module>
    setup_dbus()
  File "/usr/share/wicd/curses/wicd-curses.py", line 1031, in setup_dbus
    dbus_ifaces = dbusmanager.get_dbus_ifaces()
  File "/usr/lib/python2.7/site-packages/wicd/dbusmanager.py", line 36, in get_dbus_ifaces
    return DBUS_MANAGER.get_dbus_ifaces()
  File "/usr/lib/python2.7/site-packages/wicd/dbusmanager.py", line 62, in get_dbus_ifaces
    if not self._dbus_ifaces: connect_to_dbus()
  File "/usr/lib/python2.7/site-packages/wicd/dbusmanager.py", line 48, in connect_to_dbus
    return DBUS_MANAGER.connect_to_dbus()
  File "/usr/lib/python2.7/site-packages/wicd/dbusmanager.py", line 79, in connect_to_dbus
    proxy_obj = self._bus.get_object("org.wicd.daemon", '/org/wicd/daemon')
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 244, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 246, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 183, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 281, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1

    It seems to be caused by missing setting of dbus. But I think wicd-curses should give some nice message in such cases. So I made a little modify in wicd-curses.py, and It will show like:

$ python2 -O wicd-curses.py

Can't connect to the daemon, trying to start it automatically...
Failed to start wicd automatically....Exit now.

    now.
    My patch is naive. Here is the result of diff. I havn't submit any patch before, so sorry for the poor format.

$ diff wicd-curses.py wicd-curses.py.old

1030,1038c1030,1034
< try:
< bus = dbusmanager.get_bus()
< dbus_ifaces = dbusmanager.get_dbus_ifaces()
< daemon = dbus_ifaces['daemon']
< wireless = dbus_ifaces['wireless']
< wired = dbus_ifaces['wired']
< except DBusException:
< print 'Failed to start wicd automatically....Exit now.'
< sys.exit(3)
---
> bus = dbusmanager.get_bus()
> dbus_ifaces = dbusmanager.get_dbus_ifaces()
> daemon = dbus_ifaces['daemon']
> wireless = dbus_ifaces['wireless']
> wired = dbus_ifaces['wired']

regards,
Liuzhiyou