remove useless conditional

controller instances always have a response object, so we don't need to
test to see if there is one, just always call to_a on the response.

1 files changed, 1 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
index 129e0bbd3c..4392bc8266 100644
--- a/actionpack/lib/action_controller/metal.rb
+++ b/actionpack/lib/action_controller/metal.rb
@@ -230,7 +230,7 @@ module ActionController
     end
 
     def to_a #:nodoc:
-      response ? response.to_a : [status, headers, response_body]
+      response.to_a
     end
 
     class_attribute :middleware_stack