[orca-list] Speech-dipatcher factory broke in orca later than 2.19.6

[David Csercsics <aarg shaw ca>]

When I try to use the orca speech dispatcher with the latest versions
of orca I get the following during orca setup:

/usr/lib/python2.5/site-packages/gtk-2.0/gtk/__init__.py:69: GtkWarning: could not open display
  warnings.warn(str(e), _gtk.Warning)
Enter choice: Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/orca/orca.py", line 1049, in _showPreferencesConsole
    module.showPreferencesUI()
  File "/usr/lib/python2.5/site-packages/orca/orca_console_prefs.py", line 434, in showPreferencesUI
    if not setupSpeech(prefsDict):
  File "/usr/lib/python2.5/site-packages/orca/orca_console_prefs.py", line 237, in setupSpeech
    speechServerChoice) # server
  File "/usr/lib/python2.5/site-packages/orca/orca_console_prefs.py", line 106, in sayAndPrint
    speechServer.speak(text, acss)
  File "/usr/lib/python2.5/site-packages/orca/speechdispatcherfactory.py", line 318, in speak
    self._speak(text, acss)
  File "/usr/lib/python2.5/site-packages/orca/speechdispatcherfactory.py", line 232, in _speak
    self._apply_acss(acss)
  File "/usr/lib/python2.5/site-packages/orca/speechdispatcherfactory.py", line 226, in _apply_acss
    value = acss.get(property)
AttributeError: 'NoneType' object has no attribute 'get'

Any idea what I left out or how I can help fix that? Everything else
works great!