vendor/rails/actionpack/lib/action_controller/base.rb in radiant-0.8.2 vs vendor/rails/actionpack/lib/action_controller/base.rb in radiant-0.9.0.rc2

@@ -500,10 +500,10 @@
                   item
                 end
               end
             elsif block_given?
               key = key.dup
-              value = value.dup if value
+              value = value.dup if value.duplicable?
               yield key, value
               filtered_parameters[key] = value
             else
               filtered_parameters[key] = value
             end