Merge pull request #22218 from EhsanYousefi/patch-2

Fix Unnecessary variable assignment /associations/builder/belongs_to.rb#add_destroy_callbacks

activerecord/lib/active_record/associations/builder/belongs_to.rb

@@ -116,8 +116,7 @@ def self.add_touch_callbacks(model, reflection)
     end
 
     def self.add_destroy_callbacks(model, reflection)
-      name = reflection.name
-      model.after_destroy lambda { |o| o.association(name).handle_dependency }
+      model.after_destroy lambda { |o| o.association(reflection.name).handle_dependency }
     end
 
     def self.define_validations(model, reflection)