LeapArray currentWindow method‘s comment has problem

[ZhongJinHacker]

LeapArray currentWindow 方法注释与逻辑不符

130行： (3) Bucket is deprecated, then reset current bucket and clean all deprecated buckets.

实际上逻辑是重置了当前bucket，但并没有清理所有其他过期的buckets

130 line the commnet does not express the logic correctly，the logic does not clean all deprecated buckets. it just reset the current bucket。 it may mislead the people

Type: bug report

如果你们认为我描述的确实是有这个问题，请分配这个任务给我，我希望来修复这个问题

If you think my description is right， please assign this fix mission to me， I glad to fix it

[sczyh30]

Thanks for reporting. The "clean" operation was indeed removed in the earlier version (see #47). The javadoc should be updated.