rack_lint_call_with_close.rb

module Rack
  class Lint
    unless method_defined?(:call_with_close)
      def call_with_close(env = nil)
        call_without_close(env).tap do |status, headers, body|
          body.close if body.respond_to?(:close)
        end
      end

      alias_method_chain :call, :close
    end
  end
end