sample/test.rb: fix standalone
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36366 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
sample/test.rb: fix standalone
also tty, that is directly invoked but not from tool/rubytest.rb.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36366 b2dd03c8-39d4-4d8f-98ff-823fe69b080e