[orca] Clear the structural navigation cache for nested document state-busy changes

[Joanmarie Diggs <joanied src gnome org>]

commit 9fa037ea4d100fcf2de95e668f837403791e8772
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Feb 24 22:23:37 2016 -0500

    Clear the structural navigation cache for nested document state-busy changes

 src/orca/scripts/web/script.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/scripts/web/script.py b/src/orca/scripts/web/script.py
index eb54fd9..ccf5a08 100644
--- a/src/orca/scripts/web/script.py
+++ b/src/orca/scripts/web/script.py
@@ -1084,6 +1084,8 @@ class Script(default.Script):
             debug.println(debug.LEVEL_INFO, msg, True)
             return False
 
+        self.structuralNavigation.clearCache()
+
         if self.utilities.getDocumentForObject(event.source.parent):
             msg = "WEB: Ignoring: Event source is nested document"
             debug.println(debug.LEVEL_INFO, msg, True)