RFR: 8273826: Correct Manifest file name and NPE checks [v2]

[Sean Coffey]

On Wed, 6 Oct 2021 17:54:15 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Sean Coffey has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Make variables final
>
> src/java.base/share/classes/sun/security/util/ManifestEntryVerifier.java line 66:
> 
>> 64: 
>> 65:     private String name = null;
>> 66:     private String manifestFileName;
> 
> Make this final and add a comment that it will never be null.

Thanks for the review - Made final and added comment. Also decided to make the "Manifest man" variable final here also while here.

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PR: https://git.openjdk.java.net/jdk/pull/5841