RFR: 8275381 G1: refactor 2 constructors of G1CardSetConfiguration

Wed Oct 20 15:30:10 UTC 2021

On Wed, 20 Oct 2021 08:45:38 GMT, Hamlin Li <mli at openjdk.org> wrote:

> 2 constructors of G1CardSetConfiguration share some code, it's better to refacoring them to simplify the code.

Instead of introducing a `init` method, I think [delegating constructor](https://en.cppreference.com/w/cpp/language/constructor) is designed for this use case.

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Changes requested by ayang (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6033