rack.f10713c.patch

diff --git a/lib/rack/chunked.rb b/lib/rack/chunked.rb
index dddf969..0ee8fb9 100644
--- a/lib/rack/chunked.rb
+++ b/lib/rack/chunked.rb
@@ -35,7 +35,7 @@ module Rack
     def each
       term = "\r\n"
       @body.each do |chunk|
-        size = bytesize(chunk)
+        size = chunk.nil? ? 0 : bytesize(chunk)
         next if size == 0
         yield [size.to_s(16), term, chunk, term].join
       end
diff --git a/lib/rack/content_length.rb b/lib/rack/content_length.rb
index 1e56d43..ba72ef2 100644
--- a/lib/rack/content_length.rb
+++ b/lib/rack/content_length.rb
@@ -13,7 +13,7 @@ module Rack
       status, headers, body = @app.call(env)
       headers = HeaderHash.new(headers)
 
-      if !STATUS_WITH_NO_ENTITY_BODY.include?(status) &&
+      if !STATUS_WITH_NO_ENTITY_BODY.include?(status.to_i) &&
          !headers['Content-Length'] &&
          !headers['Transfer-Encoding'] &&
          (body.respond_to?(:to_ary) || body.respond_to?(:to_str))

Patch to Commit f 10713c