iseq.c: Refactor out rb_iseq_new_ifunc from rb_iseq_new_with_opt
It is too error-prone to pass IMEMO_IFUNC object as NODE*.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
iseq.c: Refactor out rb_iseq_new_ifunc from rb_iseq_new_with_opt
It is too error-prone to pass IMEMO_IFUNC object as NODE*.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e