RFR: 8280459: Suspicious integer division in Hashtable.readHashtable

[Aleksey Shipilev]

On Fri, 21 Jan 2022 15:19:38 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Found by Sonar. See details in the bug.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug `tier1`
>  - [x] Linux x86_64 fastdebug `java/util/Hashtable`

Thanks for reviews!

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PR: https://git.openjdk.java.net/jdk/pull/7178