【Fix】产品有库存无法下单问题修正

app/Http/Controllers/Api/Orders.php

@@ -95,7 +95,7 @@ class Orders extends Api{
 				$skusList[$buyInfo['product_skuid']]['decr'] = empty($skusList[$buyInfo['product_skuid']]['decr']) ? $buyInfo['buy_num'] : $skusList[$buyInfo['product_skuid']]['decr'] + $buyInfo['buy_num'];
 			}
 			// 判断库存
-			if( $productInfo['stock'] - $buyInfo['buy_num'] < $buyInfo['buy_num'] )  return json_send(['code'=>'error','msg'=>'产品库存不足','data'=>['error'=>'产品库存不足=>'.$buyInfo['product_id']]]);
+			if( $productInfo['stock'] < $buyInfo['buy_num'] )  return json_send(['code'=>'error','msg'=>'产品库存不足','data'=>['error'=>'产品库存不足=>'.$buyInfo['product_id']]]);
 			// 需要扣除的库存
 			$productList[$buyInfo['product_id']]['decr'] = empty($productList[$buyInfo['product_id']]['decr']) ? $buyInfo['buy_num'] : $productList[$buyInfo['product_id']]['decr'] + $buyInfo['buy_num'];
 			// 计算价值