调整计算价格bug

app/Services/Dealer/OrderService.php

@@ -56,7 +56,7 @@ class OrderService
      * @param integer $number
      * @return string
      */
-    public function totalAmount(User $user, DealerProduct $product, int $number = 0, ?int $allNumber = 0)
+    public function totalAmount(User $user, DealerProduct $product, int $number = 0, ?int $allNumber = null)
     {
         return bcmul($this->getSalePrice($user, $product, $allNumber ?? $number), $number, 2);
     }