confirm order

www/protected/modules/o2o/controllers/OrderController.php

@@ -81,7 +81,7 @@ class  OrderController extends O2oBaseController{
                 $product_obj = Product::get(new MongoId($product['product_id']));
                 if($product_obj){
                     $price += ($product_obj->price*$product['count']);
-                    $price += $extra['price']*$product['count'];
+                    $price += $extra[0]['price']*$product['count'];
 
                     $product_temp['product'] = $product_obj->_id;
                     $product_temp['count'] = $product['count'];