RFR: 8284853: Fix various 'expected' typo [v2]

Wed Apr 20 14:04:32 UTC 2022

On Thu, 14 Apr 2022 18:04:16 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> I found [yet another typo](https://github.com/kelthuzadx/jdk/commit/acb9e15bc0bf5395d1c0875f36992f692734f948) ...

I didn't think "JVMInvokeMethodSlack" was a typo.  I think it's the idea of "slack space" meaning leftover space.  We require a certain amount of this space.  We need some slack on the stack, in order to invoke.

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PR: https://git.openjdk.java.net/jdk/pull/8231