RFR: JDK-8291974 PrivateCredentialPermission should not use local variable to enable debugging [v4]

[Sean Mullan]

On Mon, 10 Oct 2022 20:52:01 GMT, Mark Powers <mpowers at openjdk.org> wrote:

>> https://bugs.openjdk.org/browse/JDK-8291974
>
> Mark Powers has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Sean comments

test/jdk/javax/security/auth/PrivateCredentialPermission/Serial2.java line 35:

> 33: import java.util.*;
> 34: 
> 35: public class Serial2 implements java.io.Serializable {

I don't see why this needs to implement `Serializable` (I see you probably used the other `Serial.java` test in this directory as a template. I don't think that needs it either, but you can leave that as is for now).

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PR: https://git.openjdk.org/jdk/pull/10206