Code cleanup: RuboCop: Fix Style/UnneededCondition in app/models/setting.rb

git-svn-id: http://svn.redmine.org/redmine/trunk@18397 e93f8b46-1217-0410-a6f0-8f06a7374b81

.rubocop_todo.yml

     - 'app/controllers/messages_controller.rb'
     - 'app/controllers/previews_controller.rb'
     - 'app/models/issue.rb'
-    - 'app/models/setting.rb'
 
 # Cop supports --auto-correct.
 Style/UnneededInterpolation:

app/models/setting.rb

 
   # Returns the value of the setting named name
   def self.[](name)
-    v = @cached_settings[name]
-    v ? v : (@cached_settings[name] = find_or_default(name).value)
+    @cached_settings[name] ||= find_or_default(name).value
   end
 
   def self.[]=(name, v)
     setting = find_or_default(name)
-    setting.value = (v ? v : "")
+    setting.value = v || ''
     @cached_settings[name] = nil
     setting.save
     setting.value