[orca/gnome-3-4] Prevent Orca from interrupting speech in Anaconda trees

[Joanmarie Diggs <joanied src gnome org>]

commit 63983c0d4ba8e6e15e8140ed6fb5e090de3d70a7
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sun Apr 22 14:04:56 2012 -0400

    Prevent Orca from interrupting speech in Anaconda trees

 src/orca/scripts/default.py |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/orca/scripts/default.py b/src/orca/scripts/default.py
index 12d2d35..fef8ba8 100644
--- a/src/orca/scripts/default.py
+++ b/src/orca/scripts/default.py
@@ -4750,9 +4750,10 @@ class Script(script.Script):
         # be sure not to cut of the presentation of the name-change
         # event.
 
-        if orca_state.locusOfFocus == event.any_data and \
-           event.any_data.name == self.pointOfReference.get('oldName', ''):
-            return False
+        if orca_state.locusOfFocus == event.any_data:
+            oldName = self.pointOfReference.get('oldName', '')
+            if not oldName or event.any_data.name == oldName:
+                return False
 
         if event.source == orca_state.locusOfFocus == event.any_data.parent:
             return False