[ekiga] Fix Call buttons do not work

[Eugen Dedu <ededu src gnome org>]

commit a54cb07c8873829f499c21d2eb4ba3f32d277fc7
Author: Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>
Date:   Wed May 12 10:57:50 2010 +0200

    Fix Call buttons do not work
    
    The calling_state variable was not initialised.

 src/gui/main_window.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/gui/main_window.cpp b/src/gui/main_window.cpp
index 10f17cf..742ce91 100644
--- a/src/gui/main_window.cpp
+++ b/src/gui/main_window.cpp
@@ -3759,8 +3759,9 @@ ekiga_main_window_init (EkigaMainWindow *mw)
   mw->priv->current_call = boost::shared_ptr<Ekiga::Call>();
   mw->priv->timeout_id = -1;
   mw->priv->levelmeter_timeout_id = -1;
+  mw->priv->calling_state = Standby;
   mw->priv->audio_transmission_active = false;
-  mw->priv->audio_reception_active = false; 
+  mw->priv->audio_reception_active = false;
   mw->priv->video_transmission_active = false;
   mw->priv->video_reception_active = false;
 #ifndef WIN32