添加安全检查，确保转换后的值在int类型的范围内

[lostmaniac]

What this PR does / why we need it?

Add checks

Summary of your change

添加安全检查，确保转换后的值在int类型的范围内

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[wanghe-fit2cloud]

感谢支持！

[ssongliu]

这里加着应该作用不大吧，如果超出范围的话 size, err := strconv.ParseInt(matches[2], 10, 64) 这一行 err 就不为空了，会报错 strconv.ParseInt: parsing xxx: value out of range

[lostmaniac]

size, err := strconv.ParseInt(matches[2], 10, 64)
这里检查的是int64，但是下面使用的时候，转换成了int，如果这里超出int的范围就会有问题

[ssongliu]

size, err := strconv.ParseInt(matches[2], 10, 64) 这里检查的是int64，但是下面使用的时候，转换成了int，如果这里超出int的范围就会有问题

👌

[ssongliu]

/lgtm