[pitivi] factories/base.py: clean up child bin

[Edward Hervey <edwardrv src gnome org>]

commit 07ae80d0e8601d28920639dd054d20e123681011
Author: Brandon Lewis <brandon_lewis alum berkeley edu>
Date:   Tue Jan 19 16:21:09 2010 -0800

    factories/base.py: clean up child bin

 pitivi/factories/base.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/factories/base.py b/pitivi/factories/base.py
index 0c59a81..e0b6081 100644
--- a/pitivi/factories/base.py
+++ b/pitivi/factories/base.py
@@ -318,6 +318,9 @@ class SourceFactory(ObjectFactory):
             bin.decodebin.disconnect_by_func(self._singlePadRemovedCb)
 
         del bin.decodebin
+        if hasattr(bin, "child"):
+            bin.child.set_state(gst.STATE_NULL)
+            del bin.child
 
         if hasattr(bin, "volume"):
             # only audio bins have a volume element