Undo over-enthusiastic obj system removal in debuginfo.

src/comp/middle/debuginfo.rs

@@ -727,6 +727,9 @@ fn create_function(fcx: @fn_ctxt) -> @metadata<subprogram_md> {
           }
         }
       }
+      ast_map::node_method(method) {
+          (method.ident, method.decl.output, method.id)
+      }
       ast_map::node_res_ctor(item) {
         alt item.node { ast::item_res(decl, _, _, _, ctor_id) {
           (item.ident, decl.output, ctor_id)