修改购物车商品为空时进入结算页跳转页的地址

Code Review By Rock Zhang

@@ -276,7 +276,7 @@ class IndexController extends AbstractAction
         $uid = $this->getUid(true);
         $cartGoods = CartModel::getCartData($uid, $shoppingKey);
         if (empty($cartGoods) || isset($cartGoods['isEmptyCart'])) {
-            $this->go(Helpers::url('/shoppingcart'));
+            $this->go(Helpers::url('/cart/index/index'));
         }
 
         $cartType = $this->get('cartType', 'ordinary');