[folks] Add a missing signal disconnection to Kf.Backend

[Philip Withnall <pwithnall src gnome org>]

commit 7fede8525f682559fe23280ad107082d3793b82d
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri Apr 22 22:01:38 2011 +0100

    Add a missing signal disconnection to Kf.Backend
    
    Helps: bgo#645186

 backends/key-file/kf-backend.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/backends/key-file/kf-backend.vala b/backends/key-file/kf-backend.vala
index c5a981c..beefe73 100644
--- a/backends/key-file/kf-backend.vala
+++ b/backends/key-file/kf-backend.vala
@@ -134,6 +134,7 @@ public class Folks.Backends.Kf.Backend : Folks.Backend
 
   private void _store_removed_cb (Folks.PersonaStore store)
     {
+      store.removed.disconnect (this._store_removed_cb);
       this.persona_store_removed (store);
       this._persona_stores.unset (store.id);
       this.notify_property ("persona-stores");