vm_method.c: fix super in refined module
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61484 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_method.c: fix super in refined module
the original method entry of refined module instance method with
the active ICLASS, to track super method chain.
[ruby-dev:50390] [Bug #14232]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61484 b2dd03c8-39d4-4d8f-98ff-823fe69b080e