lib/muina/maybe/none.rb in muina-0.3.0 vs lib/muina/maybe/none.rb in muina-0.4.0

@@ -2,9 +2,13 @@
 
 module Muina
   class Maybe
     class None < self
       private_class_method(:new)
+      def initialize
+        freeze
+      end
+
       def some?
         false
       end
 
       def none?