Merge pull request #596 from SamSaffron/master

https://git.debu.gs/gitweb/?p=rack;a=commitdiff;h=0adc7ceb9359426fee21d5e554dd62ec7d535e34
code, git.debu.gs | 2013-09-03 11:16:29 +0000 GMT | No.369 
Merge pull request #596 from SamSaffron/master

Conditional get is causing exceptions during regular usage
  • [DH] lib/rack/conditionalget.rb