[pyatspi2] Fix deregisterKeystrokeListener

[Mike Gorse <mgorse src gnome org>]

commit 8d4ff5f3e2dfc7d49b3630bf2f54048540549f07
Author: Mike Gorse <mgorse novell com>
Date:   Tue Dec 27 18:17:02 2011 -0500

    Fix deregisterKeystrokeListener
    
    deregisterKeystrokeListener would not work with the same parameters as
    passed to registerKeystrokeListener.
    
    http://bugzilla.gnome.org/show_bug.cgi?id=666871

 pyatspi/registry.py |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/pyatspi/registry.py b/pyatspi/registry.py
index 7ea25b7..0a3a1c9 100644
--- a/pyatspi/registry.py
+++ b/pyatspi/registry.py
@@ -354,7 +354,14 @@ class Registry(object):
                         listener = self.event_listeners[client]
                 except:
                         return
-                Atspi.deregister_keystroke_listener (listener, key_set, mask, kind)
+
+                if hasattr(mask, '__iter__'):
+                        masks = mask
+                else:
+                        masks = [mask]
+                for m in masks:
+                        Atspi.deregister_keystroke_listener (listener, key_set,
+                                m, self.makeKind(kind))
 
                 # TODO: enqueueEvent, etc?