Avoid coupling Action Pack to Railties.

Referencing Rails.env without checking if it's defined couples
us to Railties.

Fix by avoiding the line breaks if we don't have an env check
to rely on.

1 files changed, 1 insertions, 1 deletions

diff --git a/actionpack/lib/action_controller/log_subscriber.rb b/actionpack/lib/action_controller/log_subscriber.rb
index d1d6acac26..450a04779f 100644
--- a/actionpack/lib/action_controller/log_subscriber.rb
+++ b/actionpack/lib/action_controller/log_subscriber.rb
@@ -26,7 +26,7 @@ module ActionController
         end
         message = "Completed #{status} #{Rack::Utils::HTTP_STATUS_CODES[status]} in #{event.duration.round}ms"
         message << " (#{additions.join(" | ".freeze)})" unless additions.blank?
-        message << "\n\n" if Rails.env.development?
+        message << "\n\n" if defined?(Rails.env) && Rails.env.development?
 
         message
       end