[jdk17u] Integrated: 8273826: Correct Manifest file name and NPE checks

[Sean Coffey]

On Thu, 7 Oct 2021 15:27:10 GMT, Sean Coffey <coffeys at openjdk.org> wrote:

> Clean backport from JDK 18

This pull request has now been integrated.

Changeset: f89c59f9
Author:    Sean Coffey <coffeys at openjdk.org>
URL:       https://git.openjdk.java.net/jdk17u/commit/f89c59f9d151eea3f747155b129e17c9e6e8ec32
Stats:     139 lines in 5 files changed: 128 ins; 2 del; 9 mod

8273826: Correct Manifest file name and NPE checks

Backport-of: 03a8d342b86e720d3cba08d540182b4ab161fba3

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PR: https://git.openjdk.java.net/jdk17u/pull/166