Ruby

vm_method.c: update assertion [ci skip]

• vm_method.c (prepare_callable_method_entry): update assertion
  as defined_class may be T_MODULE not only I_ICLASS since r56213.
  [Feature #12534]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e