RFR: 8298380: Clean up redundant array length checks in JDK code base

[Alex Menkov]

On Thu, 8 Dec 2022 12:37:17 GMT, Sergey Tsypanov <stsypanov at openjdk.org> wrote:

> Newer version of IntelliJ IDEA introduces new [inspection](https://youtrack.jetbrains.com/issue/IDEA-301797/IDEA-should-report-redundant-array-length-check-in-certain-cases) detecting redundant array length check in snippets like
> 
> <T> void iterate(T[] items) {
>   if (items.length == 0) {
>     return;
>   }
>   for (T item : items) {
>     //...
>   }
> }
> 
> Here
> 
> if (items.length == 0) {
>   return;
> }
> 
> is redundant and can be removed as length check is performed by for-each loop.

Marked as reviewed by amenkov (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11589