[orca] Ensure combo boxes are never treated as layout only

[Joanmarie Diggs <joanied src gnome org>]

commit c1d922a6e7214eba034ab1f1fcd977ec1370fc22
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Jan 16 12:20:30 2018 -0500

    Ensure combo boxes are never treated as layout only

 src/orca/script_utilities.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 694b5ea..4bab35c 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -1338,6 +1338,8 @@ class Utilities:
             layoutOnly = False
         elif role == pyatspi.ROLE_MENU:
             layoutOnly = parentRole == pyatspi.ROLE_COMBO_BOX
+        elif role == pyatspi.ROLE_COMBO_BOX:
+            layoutOnly = False
         elif role == pyatspi.ROLE_LIST:
             layoutOnly = False
         elif role == pyatspi.ROLE_FORM: