git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30565 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r30467 from trunk into ruby_1_9_2.¶
(strio_reopen): check if frozen. [ruby-core:33648]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30565 b2dd03c8-39d4-4d8f-98ff-823fe69b080e