Fixes Mantis importer broken by 2670.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2707 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/tasks/migrate_from_mantis.rake

@@ -195,7 +195,7 @@ task :migrate_from_mantis => :environment do
         file_type
       end
       
-      def read
+      def read(*args)
         content
       end
     end