* vm_insnhelper.c (vm_call_method_each_type): we should use me->defined_class
  instead of me->owner because me->owner doesn't has correct ancestors list.
  [Bug #15427]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66436 b2dd03c8-39d4-4d8f-98ff-823fe69b080e