[orca] Fix for bug 660091 - Unbound alternative keybindings in user-settings.conf prevent the preferences w

[Joanmarie Diggs <joanied src gnome org>]

commit 7f6755de7a20c381bdf9769a6a423f42e74b8f54
Author: Joanmarie Diggs <joanmarie diggs gmail com>
Date:   Mon Sep 26 07:28:53 2011 -0400

    Fix for bug 660091 - Unbound alternative keybindings in user-settings.conf prevent the preferences window from being shown

 src/orca/orca_gui_prefs.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/orca_gui_prefs.py b/src/orca/orca_gui_prefs.py
index 313b84d..bcd976a 100644
--- a/src/orca/orca_gui_prefs.py
+++ b/src/orca/orca_gui_prefs.py
@@ -2045,7 +2045,7 @@ class OrcaSetupGUI(orca_gtkbuilder.GtkBuilderWrapper):
                 if model.get(iterChild, DESCRIP)[0] == kb.handler.description:
                     exist = True
                     if not kb.keysymstring:
-                        text = None
+                        text = ''
                     else:
                         clickCount = self._clickCountToString(kb.click_count)
                         text = keybindings.getModifierNames(kb.modifiers) \