[orca] Handle yet another instance of objects going defunct on us

[Joanmarie Diggs <joanied src gnome org>]

commit 194f9d26a022614de0658b2fac23a79ad00a2a9c
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Fri Nov 22 13:45:26 2019 -0500

    Handle yet another instance of objects going defunct on us

 src/orca/scripts/web/script_utilities.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index ae0eadd10..03764e437 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -264,7 +264,13 @@ class Utilities(script_utilities.Utilities):
             return []
 
         isEmbeds = lambda r: r.getRelationType() == pyatspi.RELATION_EMBEDS
-        relations = list(filter(isEmbeds, frame.getRelationSet()))
+        try:
+            relations = list(filter(isEmbeds, frame.getRelationSet()))
+        except:
+            msg = "ERROR: Exception getting embeds relation for %s" % frame
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return []
+
         if not relations:
             return []