show_status.rb in rack-2.2.0

- old
+ new

@@ -1,10 +1,8 @@
 # frozen_string_literal: true
 
 require 'erb'
-require 'rack/request'
-require 'rack/utils'
 
 module Rack
   # Rack::ShowStatus catches all empty responses and replaces them
   # with a site explaining the error.
   #
@@ -18,10 +16,10 @@
       @template = ERB.new(TEMPLATE)
     end
 
     def call(env)
       status, headers, body = @app.call(env)
-      headers = Utils::HeaderHash.new(headers)
+      headers = Utils::HeaderHash[headers]
       empty = headers[CONTENT_LENGTH].to_i <= 0
 
       # client or server error, or explicit message
       if (status.to_i >= 400 && empty) || env[RACK_SHOWSTATUS_DETAIL]
         # This double assignment is to prevent an "unused variable" warning on