From 40081eb47caca09ad8ae320f85c0b0bfa8b9838f Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Tue, 31 May 2022 22:09:33 -0700
Subject: Avoid unnecessary string allocation in Rack::MockRequest.env_for

If :input is already provided, this string allocation is unnecessary.
---
 lib/rack/mock.rb | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/rack/mock.rb b/lib/rack/mock.rb
index e6fb57b1..c06e5390 100644
--- a/lib/rack/mock.rb
+++ b/lib/rack/mock.rb
@@ -149,8 +149,7 @@ module Rack
         end
       end
 
-      empty_str = String.new
-      opts[:input] ||= empty_str
+      opts[:input] ||= String.new
       if String === opts[:input]
         rack_input = StringIO.new(opts[:input])
       else
-- 
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