updates

jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/mini/controller/MiniVipController.java

@@ -110,6 +110,8 @@ public class MiniVipController {
         Integer ipAddrCardCount = (Integer) redisUtil.get(key);
         if (ipAddrCardCount!=null) {
             AssertUtils.notTrue(ipAddrCardCount>=5,"当前操作过快，稍后重试");
+        }else{
+            ipAddrCardCount = 0;
         }
         try {
             LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();