Tools.Standalone.autodoc_to_split_html: Minor cleanup.

lib/modules/Tools.pmod/Standalone.pmod/autodoc_to_split_html.pike

@@ -540,12 +540,7 @@ class Node
 
   array(Node) find_siblings()
   {
-    return
-      parent->class_children+
-      parent->module_children+
-      parent->enum_children+
-      parent->directive_children+
-      parent->method_children;
+    return parent->find_children();
   }
 
   array(Node) find_children()