RFR: 8269130: Replace usages of Collection.toArray() with Collection.toArray(T[]) to avoid redundant array copying

[Сергей Цыпанов]

On Mon, 14 Jun 2021 17:00:29 GMT, Andrey Turbanov <github.com+741251+turbanoff at openjdk.org> wrote:

> I found few places, where code initially perform `Object[] Colleciton.toArray()` call and then manually copy array into another array with required type.
> This PR cleanups such places to more shorter call `T[] Collection.toArray(T[])`.

I think the same simlification can be done for some classes affected by your previous PR https://github.com/openjdk/jdk/pull/4482, e.g. `HttpsClient`, lines 154-157 and 177-180 and `PKCS7`, so I'd wait for https://github.com/openjdk/jdk/pull/4482 and then add one more commit here.

@turbanoff I've filed a ticket for this: https://bugs.openjdk.java.net/browse/JDK-8269130. Also I think you can integrate https://github.com/openjdk/jdk/pull/4482

-------------

PR: https://git.openjdk.java.net/jdk/pull/4487