optimize the vipgrade for vipmember

src/main/java/com/ctrip/fun/golf/service/user/UserService.java

@@ -1369,7 +1369,7 @@ public class UserService {
         	long dayFromOutDate = DateUtil.getDistinceDayFormat(new Date(), outDate);
         	if (dayFromOutDate < 0) {
         		// 代表已经过期, 进行消除身份
-        		vipGrade = (user.getVipGrade() & ~VipGradeEnum.VIP2.getKey());
+        		vipGrade = (vipGrade & ~VipGradeEnum.VIP2.getKey());
         	}
         }
         
@@ -1379,8 +1379,7 @@ public class UserService {
         	long vipmemberExpireDays = DateUtil.getDistinceDayFormat(new Date(), vipmemberExpireTime);
         	if (vipmemberExpireDays < 0) {
         		// 代表已经过期, 进行消除身份
-        		vipGrade = (user.getVipGrade() & ~VipGradeEnum.VIP4.getKey());
-        		user.setVipGrade(vipGrade);
+        		vipGrade = (vipGrade & ~VipGradeEnum.VIP4.getKey());
         	}
         }
         user.setVipGrade(vipGrade);