更新库存bug

mallinkService/src/main/java/com/iformall/service/impl/WxOrderServiceImpl.java

@@ -628,7 +628,7 @@ public class WxOrderServiceImpl implements WxOrderService {
       try {
           //减库存，从redis中取，然后发mq消息同步到数据库
     	  long stock = redisLock.decrease(EnumCacheKey.COUPON_STOCK.getMessage()+coupon.getId(), 1);
-    	  if (stock <= 0 ) {
+    	  if (stock < 0 ) {
     		  throw new MallinkException(ErrorCode.ORDER_IS_FAIL.getCode(),"券库存已为零！");
     	  }
     	  UpdateCouponStockMsg msg = new UpdateCouponStockMsg();