vm.c: cleanup to use rb_method_entry_at

* vm.c (add_opt_method): cleanup to use rb_method_entry_at
  Easier experiments with a non-st method entry tables.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45293 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sat Mar  8 17:42:51 2014  Eric Wong  <e@80x24.org>
+
+	* vm.c (add_opt_method): cleanup to use rb_method_entry_at
+
 Sat Mar  8 13:46:40 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/dl/cptr.c (dlptr_free), ext/dl/handle.c (dlhandle_free),

vm.c

@@ -1147,8 +1147,9 @@ rb_vm_check_redefinition_by_prepend(VALUE klass)
 static void
 add_opt_method(VALUE klass, ID mid, VALUE bop)
 {
-    rb_method_entry_t *me;
-    if (st_lookup(RCLASS_M_TBL(klass), mid, (void *)&me) && me->def &&
+    rb_method_entry_t *me = rb_method_entry_at(klass, mid);
+
+    if (me && me->def &&
 	me->def->type == VM_METHOD_TYPE_CFUNC) {
 	st_insert(vm_opt_method_table, (st_data_t)me, (st_data_t)bop);
     }