test_psych.rb: close Tempfile
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_psych.rb: close Tempfile
Tempfile leak. https://github.com/tenderlove/psych/pull/288
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e