Added missing parenthesis.

tasks/paperclip_tasks.rake

@@ -49,7 +49,7 @@ namespace :paperclip do
     task :metadata => :environment do
       for_all_attachments do |instance, name|
         if file = instance.send(name).to_file
-          instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip
+          instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip)
           instance.send("#{name}_content_type=", file.content_type.strip)
           instance.send("#{name}_file_size=", file.size) if instance.respond_to?("#{name}_file_size")
           instance.save(false)