* Hopefully fix a long lasting refcount issue in the es module that prevented...

* Hopefully fix a long lasting refcount issue in the es module that prevented the mp4 frame header to be written properly on exit
* (Well, es is deprecated anyway)

modules/stream_out/es.c

@@ -395,7 +395,7 @@ static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
 {
     sout_access_out_t *p_access = id->p_mux->p_access;
-
+    sout_MuxDelete( id->p_mux );
     sout_MuxDeleteStream( id->p_mux, id->p_input );
     sout_AccessOutDelete( p_access );