[orca] Don't assume row accessible objects when getting descendant at point

[Joanmarie Diggs <joanied src gnome org>]

commit 7d2855b529e246d876dbb38b9f841084ae835b9b
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Tue Apr 24 16:33:04 2018 -0400

    Don't assume row accessible objects when getting descendant at point

 src/orca/script_utilities.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index 758d007..b930e88 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -3849,6 +3849,7 @@ class Utilities:
                     debug.println(debug.LEVEL_INFO, msg, True)
                     if cell:
                         return cell
+                    return child
 
         for child in root:
             obj = self.descendantAtPoint(child, x, y, coordType)