[orca] Don't descend push buttons when looking for on-screen objects

[Joanmarie Diggs <joanied src gnome org>]

commit cd27fc1f40d03b26fe3bf619de30f8189eab9e99
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Oct 30 14:14:17 2018 +0100

    Don't descend push buttons when looking for on-screen objects

 src/orca/script_utilities.py | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 511eecbd1..8dbe1058d 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -1960,6 +1960,9 @@ class Utilities:
         if role == pyatspi.ROLE_COMBO_BOX:
             return [root]
 
+        if role == pyatspi.ROLE_PUSH_BUTTON:
+            return [root]
+
         if role == pyatspi.ROLE_MENU_BAR:
             self._selectedMenuBarMenu[hash(root)] = self.selectedMenuBarMenu(root)