[clutter/clutter-1.6] pipeline: NULLify deprecated_get_layers_list on copy

[Damien Lespiau <dlespiau src gnome org>]

commit ed3004816e3fe81f3705f8cb469956ebf319ec32
Author: Damien Lespiau <damien lespiau intel com>
Date:   Tue Jul 12 14:53:57 2011 +0100

    pipeline: NULLify deprecated_get_layers_list on copy
    
    That list is tracking the layers for get_layers_list() and needs to be
    freed later on. However _copy() did not initialize it and we ended up
    trying to free some garbage pointer.
    
    Cherry picked from Cogl master	221850ec

 clutter/cogl/cogl/cogl-pipeline.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/clutter/cogl/cogl/cogl-pipeline.c b/clutter/cogl/cogl/cogl-pipeline.c
index 177a37b..0e906ba 100644
--- a/clutter/cogl/cogl/cogl-pipeline.c
+++ b/clutter/cogl/cogl/cogl-pipeline.c
@@ -459,6 +459,7 @@ _cogl_pipeline_copy (CoglPipeline *src, gboolean is_weak)
    */
 
   pipeline->layers_cache_dirty = TRUE;
+  pipeline->deprecated_get_layers_list = NULL;
   pipeline->deprecated_get_layers_list_dirty = TRUE;
 
   pipeline->fragend = src->fragend;