* dbus/dbus-connection.c (close_connection_on_shutdown): new method
  split out from shared_connections_shutdown
  (shared_connections_shutdown): shutdown all shared connections
  without guids
  (_dbus_connection_ref_unlocked): handle OOM when prepending no guid
  connections to the shared_connections_no_guid list
* Patch by  Kimmo Hämäläinen <kimmo dot hamalainen at nokia dot com>