They also removed two rate-limiters that someone had (presumably intentionally) put into the code.  You always have to wonder when you see &quot;protective code&quot; like that - why was it added in the first place?  Was it premature optimization?  A guess?  Often if a weak component is strengthened, you end up with &quot;forgotten&quot; code like this and it&#x27;s always an effort to find and remove it.