placeholder doesn't exist inside this context

actionview/lib/action_view/helpers/tags/translator.rb

@@ -12,8 +12,8 @@ def initialize(object, object_name, method_and_value, i18n_scope)
         end
 
         def call
-          placeholder ||= I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => i18n_scope).presence
-          placeholder || human_attribute_name
+          translated_attribute = I18n.t("#{object_name}.#{method_and_value}", :default => i18n_default, :scope => i18n_scope).presence
+          translated_attribute || human_attribute_name
         end
 
         def i18n_default