Merge branch 'fail' of http://github.com/samsm/omniauth

oa-core/lib/omniauth/core.rb

@@ -19,7 +19,7 @@ module OmniAuth
       :path_prefix => '/auth',
       :on_failure => Proc.new do |env, message_key|
         new_path = "#{OmniAuth.config.path_prefix}/failure?message=#{message_key}"
-        [302, {'Location' => "#{new_path}"}, []]
+        [302, {'Location' => "#{new_path}", 'Content-Type'=> 'text/html'}, []]
       end,
       :form_css => Form::DEFAULT_CSS
     }