[gnome-media] Fix run-time warning

[Bastien Nocera <hadess src gnome org>]

commit 2bac9c1233d254521390acc7dce989d2d0d85f9f
Author: Bastien Nocera <hadess hadess net>
Date:   Thu May 21 11:27:27 2009 +0100

    Fix run-time warning
    
    g_object_weak_ref() doesn't like NULL notify functions.
---
 gnome-volume-control/src/gvc-mixer-control.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/gnome-volume-control/src/gvc-mixer-control.c b/gnome-volume-control/src/gvc-mixer-control.c
index d5a79f7..5c9f3f1 100644
--- a/gnome-volume-control/src/gvc-mixer-control.c
+++ b/gnome-volume-control/src/gvc-mixer-control.c
@@ -164,7 +164,6 @@ gvc_mixer_control_set_default_sink (GvcMixerControl *control,
         pa_operation_unref (o);
 
         control->priv->new_default_stream = stream;
-        g_object_weak_ref (G_OBJECT (control->priv->new_default_stream), NULL, NULL);
         g_object_add_weak_pointer (G_OBJECT (stream), (gpointer *) &control->priv->new_default_stream);
 
         o = pa_ext_stream_restore_read (control->priv->pa_context,