[库存有效期][修改]:有效期未修改提示

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

@@ -540,7 +540,7 @@ public class WxCouponServiceImpl implements WxCouponService {
                 logger.error("券有效期只可增加");
                 return new ResultData(ErrorCode.COUPON_VALID_DATE_ERR.getCode(), "券有效期只可增加");
             }
-            if(wxCoupon.getValidDays().equals(oldCoupon.getValidDays())) {
+            if(!wxCoupon.getValidDays().equals(oldCoupon.getValidDays())) {
                 bChanged = true;
             }
         }