[orca] Fix bookmark saving regression

[Joanmarie Diggs <joanied src gnome org>]

commit 80363cdb8d177278cd9399dcd241ae3a36ccfd66
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Sun Aug 14 10:12:58 2016 -0400

    Fix bookmark saving regression

 src/orca/bookmarks.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/orca/bookmarks.py b/src/orca/bookmarks.py
index a81e07c..271f6c2 100644
--- a/src/orca/bookmarks.py
+++ b/src/orca/bookmarks.py
@@ -226,7 +226,7 @@ class Bookmarks:
         path.append(start_obj.getIndexInParent())
         p = start_obj.parent
         while p:
-            if p.getRole() in docRoles:
+            if self._script.utilities.isDocument(p):
                 path.reverse()
                 return path
             path.append(p.getIndexInParent())