test_cgi.rb: skip a test on Windows
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test_cgi.rb: skip a test on Windows
depending on locale on Windows. ENV[] doesn't work properly if
console code page is not equal to file system encoding.
[ruby-core:47910] [Bug #7140]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37167 b2dd03c8-39d4-4d8f-98ff-823fe69b080e