[gnome-contacts/wip/nielsdg/address-book-fix-signal-warning] app: Disconnect signal from correct object

[Niels De Graef <nielsdg src gnome org>]

commit 8612d5ba06f5833cdc162e61d599a83e4fab768a
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Wed Jan 8 23:40:36 2020 +0100

    app: Disconnect signal from correct object
    
    We connect to the signal of `contacts_store.backend_store`, so make sure
    we also pass that object to the disconnect function.
    
    This fixes a warning when closing the "Change Address book" window.

 src/contacts-app.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/contacts-app.vala b/src/contacts-app.vala
index 1cc38ad..668c90e 100644
--- a/src/contacts-app.vala
+++ b/src/contacts-app.vala
@@ -177,7 +177,7 @@ public class Contacts.App : Gtk.Application {
                                 "eds:%s".printf(e_store.id));
          }
        }
-       contacts_store.disconnect (stores_changed_id);
+       contacts_store.backend_store.disconnect (stores_changed_id);
        dialog.destroy ();
       });
   }