vm_args.c: cache procs
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56427 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_args.c: cache procs
refinements. [Feature #9451]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56427 b2dd03c8-39d4-4d8f-98ff-823fe69b080e