[accerciser] On left arrow, go to parent before collapsing it

[Samuel Thibault <sthibaul src gnome org>]

commit 6a873b5687ba92ea6ac8fa04c728fbbc733e958c
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Sat Jul 27 16:44:45 2019 +0200

    On left arrow, go to parent before collapsing it

 src/lib/accerciser/accessible_treeview.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/lib/accerciser/accessible_treeview.py b/src/lib/accerciser/accessible_treeview.py
index 2e29cb4..49bf72d 100644
--- a/src/lib/accerciser/accessible_treeview.py
+++ b/src/lib/accerciser/accessible_treeview.py
@@ -595,9 +595,9 @@ class AccessibleTreeView(gtk.TreeView, ToolsAccessor):
       if path is not None:
         if event.keyval == gdk.KEY_Left:
           if not self.collapse_row(path):
-            # if we ccouldn't collapse the current row, collapse the parent
+            # if we ccouldn't collapse the current row, go to the parent
             if path.up():
-              self.collapse_row(path)
+              self.set_cursor(path)
           return True
         elif event.keyval == gdk.KEY_Right:
           self.expand_row(path, False)