[gegl] gegl_node_get_cache: fix bugs introduced when recreating patch for previous commit

[Øyvind Kolås <ok src gnome org>]

commit eb6dd8e46f58bd31a1c139118b865b9c3c246964
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat May 23 16:43:39 2015 +0200

    gegl_node_get_cache: fix bugs introduced when recreating patch for previous commit

 gegl/graph/gegl-node.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/gegl/graph/gegl-node.c b/gegl/graph/gegl-node.c
index d3efb0a..f6d409c 100644
--- a/gegl/graph/gegl-node.c
+++ b/gegl/graph/gegl-node.c
@@ -1889,10 +1889,9 @@ gegl_node_get_cache (GeglNode *node)
                             "format", format,
                             NULL);
 
-      gegl_object_set_has_forked (G_OBJECT (node->cache));
-
+      gegl_object_set_has_forked (G_OBJECT (cache));
       gegl_node_get_bounding_box (node);
-      gegl_buffer_set_extent (GEGL_BUFFER (node->cache), &node->have_rect);
+      gegl_buffer_set_extent (GEGL_BUFFER (cache), &node->have_rect);
 
       g_signal_connect (G_OBJECT (cache), "computed",
                         (GCallback) gegl_node_computed_event,