[orca/gnome-3-36] Handle yet another case of objects going defunct on us

[Joanmarie Diggs <joanied src gnome org>]

commit ecf78c17cd9edb32b969e67f9c27675bbf33580f
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon May 25 12:05:32 2020 -0400

    Handle yet another case of objects going defunct on us

 src/orca/scripts/web/script_utilities.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/src/orca/scripts/web/script_utilities.py b/src/orca/scripts/web/script_utilities.py
index 57ec71ca1..695f84fbd 100644
--- a/src/orca/scripts/web/script_utilities.py
+++ b/src/orca/scripts/web/script_utilities.py
@@ -3362,6 +3362,13 @@ class Utilities(script_utilities.Utilities):
         if rv is not None:
             return rv
 
+        try:
+            relations = obj.getRelationSet()
+        except:
+            msg = 'ERROR: Exception getting relationset for %s' % obj
+            debug.println(debug.LEVEL_INFO, msg, True)
+            return False
+
         # Remove this when we bump dependencies to 2.26
         try:
             relationType = pyatspi.RELATION_ERROR_FOR
@@ -3369,7 +3376,7 @@ class Utilities(script_utilities.Utilities):
             rv = False
         else:
             isMessage = lambda r: r.getRelationType() == relationType
-            rv = bool(list(filter(isMessage, obj.getRelationSet())))
+            rv = bool(list(filter(isMessage, relations)))
 
         self._isErrorMessage[hash(obj)] = rv
         return rv