error when there are no active extensions

[Siegfried Gevatter]

process 6613: Array or variant type requires that type variant be written, but end_dict_entry was written.
The overall signature expected here was 'a{sv}' and we are on byte 3 of that signature.
[ERROR - dbus.service] Unable to append ({'version': (0, 8, 0), 'extensions': []},) to message with signature a{sv}: <type 'exceptions.ValueError'>: Unable to guess signature from an empty list

[Siegfried Gevatter (rainct)]

Fixed.

=== modified file '_zeitgeist/engine/remote.py'
--- _zeitgeist/engine/remote.py 2011-05-07 19:16:12 +0000
+++ _zeitgeist/engine/remote.py 2011-06-02 20:13:59 +0000
@@ -59,7 +59,7 @@
        _dbus_properties = {
                "version": DBUSProperty(lambda self: (0, 8, 0), out_signature="iii"),
                "extensions": DBUSProperty(
- lambda self: list(self._engine.extensions.iter_names()),
+ lambda self: dbus.Array(self._engine.extensions.iter_names(), 's'),
                        out_signature="as"),
        }