the method RRateLimiter.expire() is incorrect working

[91diy]

this is my code :
`
String key = REDISSON_RATE_LIMIT + limit.prefix() + ":" +spel;
RRateLimiter rRateLimiter = redissonClient.getRateLimiter(key);
rRateLimiter.trySetRate(RateType.OVERALL, limit.rate(), limit.rateInterval(), limit.unit());

        if (limit.expireSecond() !=-1) {
            rRateLimiter.expire(limit.expireSecond(), TimeUnit.SECONDS);
        }

@RedissonRateLimit(prefix = "trade", spel = "#trade.rootMchId",
rate = 1, rateInterval = 2, unit = RateIntervalUnit.SECONDS, expireSecond = 5)
@PostMapping("/trade")
public ResponseEntity trade(@requestbody Trade trade) {
return ResponseEntity.ok("success");
}
`
then I fund a bug ：
5 seconds have passed， the redis key “redisson_rate_limit:trade:rootMchId0001” has removed，but the redis key
"{redisson_rate_limit:trade:rootMchId0001}:permits" and “{redisson_rate_limit:trade:rootMchId0001}:value ” still exist.

Who knows you can help me？please...

[mrniko]

Fixed in #2931