[gnome-settings-daemon] media-keys: Don't leak the key grabber proxy across plugin restarts

[Rui Matos <rtcm src gnome org>]

commit e279c213f573dd039f462833fdcac1d4122bd7cd
Author: Rui Matos <tiagomatos gmail com>
Date:   Fri Oct 3 17:47:57 2014 +0200

    media-keys: Don't leak the key grabber proxy across plugin restarts
    
    In particular, this fixes multiple calls to on_accelerator_activated()
    after stopping and starting the plugin.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737798

 plugins/media-keys/gsd-media-keys-manager.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/plugins/media-keys/gsd-media-keys-manager.c b/plugins/media-keys/gsd-media-keys-manager.c
index 39fe789..31045e2 100644
--- a/plugins/media-keys/gsd-media-keys-manager.c
+++ b/plugins/media-keys/gsd-media-keys-manager.c
@@ -2464,6 +2464,8 @@ gsd_media_keys_manager_stop (GsdMediaKeysManager *manager)
                 priv->keys = NULL;
         }
 
+        g_clear_object (&priv->key_grabber);
+
         if (priv->grab_cancellable != NULL) {
                 g_cancellable_cancel (priv->grab_cancellable);
                 g_clear_object (&priv->grab_cancellable);