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-rw-r--r--actionpack/lib/action_controller/metal.rb3
1 files changed, 1 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/metal.rb b/actionpack/lib/action_controller/metal.rb
index 246644dcbd..96c708f45a 100644
--- a/actionpack/lib/action_controller/metal.rb
+++ b/actionpack/lib/action_controller/metal.rb
@@ -208,8 +208,7 @@ module ActionController
@_request.reset_session
end
- class_attribute :middleware_stack
- self.middleware_stack = ActionController::MiddlewareStack.new
+ class_attribute :middleware_stack, default: ActionController::MiddlewareStack.new
def self.inherited(base) # :nodoc:
base.middleware_stack = middleware_stack.dup