RFR: Minor fixes, microoptimizations and cleanup

Tue Oct 6 15:02:11 UTC 2020

On Tue, 6 Oct 2020 12:01:41 GMT, Sergey Ponomarev <github.com+415502+stokito at openjdk.org> wrote:

>> @stokito  please send an email with your OCA data to dalibor.topic at oracle.com - my attempts to reach you seem to be not
>> have been fruitful yet. Thanks!
>
> Sorry guys, I was too busy (finished a project) and sent it only today. I resent a copy to dailbor. Will rebase now

@stokito, say "/integrate".

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PR: https://git.openjdk.java.net/jol/pull/3