vm_eval.c: compare method type

* vm_eval.c (vm_call0_body): compare method type with
  VM_METHOD_TYPE_ZSUPER.

git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/trunk@44770 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-01-31

git-svn-id: svn+ssh://svn.ruby-lang.org/ruby/trunk@44771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e