[empathy] call_handler_notify_tp_call_cb: return if call is NULL

[Guillaume Desmottes <gdesmott src gnome org>]

commit a410ade02281b10da83840f2782071935130ba3f
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Thu Nov 5 12:31:39 2009 +0000

    call_handler_notify_tp_call_cb: return if call is NULL

 src/empathy-call-window.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/empathy-call-window.c b/src/empathy-call-window.c
index 8e821ab..c6332ad 100644
--- a/src/empathy-call-window.c
+++ b/src/empathy-call-window.c
@@ -1860,7 +1860,8 @@ call_handler_notify_tp_call_cb (EmpathyCallHandler *handler,
   EmpathyTpCall *call;
 
   g_object_get (priv->handler, "tp-call", &call, NULL);
-  g_assert (call != NULL);
+  if (call == NULL)
+    return;
 
   empathy_signal_connect_weak (call, "audio-stream-error",
       G_CALLBACK (empathy_call_window_audio_stream_error), G_OBJECT (self));