parse.y: fix casts

* parse.y (reg_named_capture_assign_gen): remove needless cast.

* parse.y (must_be_dynamic_symbol, intern_cstr_without_pindown):
  get rid of type-punning cast.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46697 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-07-05

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e