Remove unused options param for token_auth schema, and avoid creating a new hash

lib/devise/orm/mongoid.rb

@@ -16,7 +16,7 @@ module Devise
         # Tell how to apply schema methods
         def apply_devise_schema(name, type, options={})
           type = Time if type == DateTime
-          field name, { :type => type }.merge(options)
+          field name, { :type => type }.merge!(options)
         end
       end
     end
@@ -26,4 +26,4 @@ end
 Mongoid::Document::ClassMethods.class_eval do
   include Devise::Models
   include Devise::Orm::Mongoid::Hook
-end
+end

lib/devise/schema.rb

@@ -18,7 +18,7 @@ module Devise
 
       apply_devise_schema :email,              String, :null => null, :default => default
       apply_devise_schema :encrypted_password, String, :null => null, :default => default, :limit => 128
-    end      
+    end
 
     # Creates password salt for encryption support.
     def encryptable
@@ -26,7 +26,7 @@ module Devise
     end
 
     # Creates authentication_token.
-    def token_authenticatable(options={})
+    def token_authenticatable
       apply_devise_schema :authentication_token, String
     end