[pitivi] viewer: Do not forget to re create the viewer when undocking

[Thibault Saunier <tsaunier src gnome org>]

commit 97e28297a2ad9b6c72594b0b5e903c7bccf73c42
Author: Thibault Saunier <tsaunier gnome org>
Date:   Wed Sep 16 19:09:02 2015 +0200

    viewer: Do not forget to re create the viewer when undocking
    
    Otherwise it is not going to work.

 pitivi/viewer.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/viewer.py b/pitivi/viewer.py
index 3c5a542..db39572 100644
--- a/pitivi/viewer.py
+++ b/pitivi/viewer.py
@@ -343,6 +343,7 @@ class ViewerContainer(Gtk.Box, Loggable):
             self.pipeline.setState(Gst.State.NULL)
             self.remove(self.target)
 
+        self.__createNewViewer()
         self.external_vbox.pack_end(self.buttons_container, False, False, 0)
         self.external_window.set_type_hint(Gdk.WindowTypeHint.UTILITY)