[totem] backend: Avoid warnings in metadata mode

[Bastien Nocera <hadess src gnome org>]

commit bc13fb898e2bf78080bb9d336f567ef9aceda949
Author: Bastien Nocera <hadess hadess net>
Date:   Sun Apr 3 16:36:10 2011 +0100

    backend: Avoid warnings in metadata mode

 src/backend/bacon-video-widget-gst-0.10.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/backend/bacon-video-widget-gst-0.10.c b/src/backend/bacon-video-widget-gst-0.10.c
index 55f8385..d9755fb 100644
--- a/src/backend/bacon-video-widget-gst-0.10.c
+++ b/src/backend/bacon-video-widget-gst-0.10.c
@@ -630,6 +630,9 @@ set_current_actor (BaconVideoWidget *bvw)
 {
   gboolean draw_logo;
 
+  if (bvw->priv->stage == NULL)
+    return;
+
   /* If there's only audio and no visualisation, draw the logo as well.
    * If we have a cover image to display, we display it regardless of whether we're
    * doing visualisations. */