[orca] Ensure usedDescriptionForName is reset

[Joanmarie Diggs <joanied src gnome org>]

commit 10e5a871aa559111f17c6b1bd69ebda91eb6ad31
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Wed Apr 25 11:53:36 2018 -0400

    Ensure usedDescriptionForName is reset

 src/orca/generator.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/orca/generator.py b/src/orca/generator.py
index 4caada4..2d38f97 100644
--- a/src/orca/generator.py
+++ b/src/orca/generator.py
@@ -302,6 +302,7 @@ class Generator:
         needed a _generateDescription for whereAmI. :-) See below.
         """
         result = []
+        self._script.pointOfReference['usedDescriptionForName'] = False
         name = self._script.utilities.displayedText(obj)
         if obj.getRole() == pyatspi.ROLE_COMBO_BOX:
             children = self._script.utilities.selectedChildren(obj)