[empathy] Check and create video_preview outside camera control

[Sjoerd Simons <sjoerds src gnome org>]

commit 8d228611ffed55ab8b4c561a1789296259a342fc
Author: Nicolas Dufresne <nicolas dufresne collabora co uk>
Date:   Tue Jul 19 13:43:44 2011 -0400

    Check and create video_preview outside camera control

 src/empathy-call-window.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/empathy-call-window.c b/src/empathy-call-window.c
index 2db7372..5603ddf 100644
--- a/src/empathy-call-window.c
+++ b/src/empathy-call-window.c
@@ -1290,6 +1290,12 @@ display_video_preview (EmpathyCallWindow *self,
 {
   EmpathyCallWindowPriv *priv = GET_PRIV (self);
 
+  if (priv->video_preview == NULL)
+    {
+      create_video_preview (self);
+      add_video_preview_to_pipeline (self);
+    }
+
   if (display)
     {
       /* Display the video preview */