[orca] Chromium: Fix bug with flat-review clicking

[Joanmarie Diggs <joanied src gnome org>]

commit 2e8e69adbb2d1ce1ef1ccfcfd46abff33cc2b167
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Thu Aug 22 18:48:47 2019 -0400

    Chromium: Fix bug with flat-review clicking
    
    Be sure we have valid character extents before clicking on a character.

 src/orca/flat_review.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/orca/flat_review.py b/src/orca/flat_review.py
index b795aaaab..4ca322038 100644
--- a/src/orca/flat_review.py
+++ b/src/orca/flat_review.py
@@ -921,7 +921,7 @@ class Context:
 
     def _getClickPoint(self):
         string, x, y, width, height = self.getCurrent(Context.CHAR)
-        if x < 0 and y < 0:
+        if (x < 0 and y < 0) or (width <= 0 and height <=0):
             return -1, -1
 
         # Click left of center to position the caret there.