From b058947745d3a1bf32e5f08b96409c2aaabc2636 Mon Sep 17 00:00:00 2001
From: Samuel Williams <samuel.williams@oriontransfer.co.nz>
Date: Sat, 11 Jan 2020 11:33:47 +1300
Subject: [PATCH] Ensure body is closed after buffering it. Fixes #877.

---
 lib/rack/response.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/rack/response.rb b/lib/rack/response.rb
index 5c8dbab96..fab4efd7b 100644
--- a/lib/rack/response.rb
+++ b/lib/rack/response.rb
@@ -236,6 +236,8 @@ def buffered_body!
           body.each do |part|
             @writer.call(part.to_s)
           end
+
+          body.close if body.respond_to?(:close)
         end
 
         @buffered = true