Fix linting errors

core/app/models/spree/adjustment_reason.rb

@@ -2,7 +2,7 @@
 
 module Spree
   class AdjustmentReason < Spree::Base
-    has_many :adjustments, inverse_of: :adjustment_reason
+    has_many :adjustments, inverse_of: :adjustment_reason, dependent: :restrict_with_exception
 
     validates :name, presence: true, uniqueness: { case_sensitive: false, allow_blank: true }
     validates :code, presence: true, uniqueness: { case_sensitive: false, allow_blank: true }