[gtk/matthiasc/a11y] atspicontext: Own a ref to the root

[Matthias Clasen <matthiasc src gnome org>]

commit 713eaaec42c049bb166e75a18a963a68623cedf3
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 9 15:28:55 2020 -0400

    atspicontext: Own a ref to the root
    
    The dispose method drops a reference, so we need
    to make sure that we own one in the first place.

 gtk/a11y/gtkatspicontext.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/a11y/gtkatspicontext.c b/gtk/a11y/gtkatspicontext.c
index 46f4f307f7..61b9756747 100644
--- a/gtk/a11y/gtkatspicontext.c
+++ b/gtk/a11y/gtkatspicontext.c
@@ -166,6 +166,8 @@ gtk_at_spi_context_constructed (GObject *gobject)
                               g_object_ref (self->root),
                               g_object_unref);
     }
+  else
+    g_object_ref (self->root);
 
   /* We use the application's object path to build the path of each
    * accessible object exposed on the accessibility bus; the path is