[gegl] gegl-dot: a few fixes

[N/A <ell src gnome org>]

commit 5ad5ce46e6ca1e5f70080e44b8d9dc1c6be24d58
Author: Ell <ell_se yahoo com>
Date:   Fri Nov 10 02:32:11 2017 -0500

    gegl-dot: a few fixes
    
    In gegl-dot.c, don't set "id" property when constructing the dot
    visitor.  Visitors no longer have this property.
    
    In gegl-dot-visitor.c, don't chain up to the visit_{pad,node}()
    functions of the base class.  They used to be a NOP before the
    last few commits, and now they're NULL.

 gegl/gegl-dot-visitor.c |    4 ----
 gegl/gegl-dot.c         |    5 +----
 2 files changed, 1 insertions(+), 8 deletions(-)
---
diff --git a/gegl/gegl-dot-visitor.c b/gegl/gegl-dot-visitor.c
index da1de4f..e65ab66 100644
--- a/gegl/gegl-dot-visitor.c
+++ b/gegl/gegl-dot-visitor.c
@@ -79,8 +79,6 @@ gegl_dot_visitor_visit_node (GeglVisitor *visitor,
 
   g_return_val_if_fail (self->priv->string_to_append != NULL, FALSE);
 
-  GEGL_VISITOR_CLASS (gegl_dot_visitor_parent_class)->visit_node (visitor, node);
-
   gegl_dot_util_add_node (self->priv->string_to_append, node);
 
   return FALSE;
@@ -97,8 +95,6 @@ gegl_dot_visitor_visit_pad (GeglVisitor *visitor,
 
   g_return_val_if_fail (self->priv->string_to_append != NULL, FALSE);
 
-  GEGL_VISITOR_CLASS (gegl_dot_visitor_parent_class)->visit_pad (visitor, pad);
-
   for (pad_iter = pads; pad_iter; pad_iter = g_slist_next (pad_iter))
     {
       GeglPad *pad = GEGL_PAD (pad_iter->data);
diff --git a/gegl/gegl-dot.c b/gegl/gegl-dot.c
index 116e36a..40c50b9 100644
--- a/gegl/gegl-dot.c
+++ b/gegl/gegl-dot.c
@@ -255,11 +255,8 @@ gegl_dot_add_node_and_dependencies (GString  *string,
 {
   GeglDotVisitor *dot_visitor;
   GeglPad        *pad;
-  gpointer        context_id = string;
 
-  dot_visitor = g_object_new (GEGL_TYPE_DOT_VISITOR,
-                              "id", context_id,
-                              NULL);
+  dot_visitor = g_object_new (GEGL_TYPE_DOT_VISITOR, NULL);
 
   gegl_dot_visitor_set_string_to_append (dot_visitor,
                                          string);