[vala] codegen: Use builder API for dup func wrapper

[Jürg Billeter <juergbi src gnome org>]

commit d0101ddaef2ee975d898d64a7ee7fcd1a364955a
Author: Jürg Billeter <j bitron ch>
Date:   Sun Oct 10 11:51:39 2010 +0200

    codegen: Use builder API for dup func wrapper

 codegen/valaccodebasemodule.vala |   12 +++---------
 1 files changed, 3 insertions(+), 9 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index b520fb4..c6e8612 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -2534,15 +2534,11 @@ public class Vala.CCodeBaseModule : CodeGenerator {
 			return destroy_func;
 		}
 
-		// declaration
-
 		var function = new CCodeFunction (destroy_func, type.get_cname ());
 		function.modifiers = CCodeModifiers.STATIC;
 		function.add_parameter (new CCodeFormalParameter ("self", type.get_cname ()));
 
-		// definition
-
-		var block = new CCodeBlock ();
+		push_function (function);
 
 		var cl = type.data_type as Class;
 		assert (cl != null && cl.is_gboxed);
@@ -2551,13 +2547,11 @@ public class Vala.CCodeBaseModule : CodeGenerator {
 		free_call.add_argument (new CCodeIdentifier (cl.get_type_id ()));
 		free_call.add_argument (new CCodeIdentifier ("self"));
 
-		block.add_statement (new CCodeReturnStatement (free_call));
+		ccode.add_return (free_call);
 
-		// append to file
+		pop_function ();
 
 		cfile.add_function_declaration (function);
-
-		function.block = block;
 		cfile.add_function (function);
 
 		return destroy_func;