git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@58140 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
may fix the test failure on some platforms introduced at r58108.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@58140 b2dd03c8-39d4-4d8f-98ff-823fe69b080e