git: openjdk/jdk17u: master: 8273826: Correct Manifest file name and NPE checks

[Sean Coffey]

Changeset: f89c59f9
Author:    Sean Coffey <coffeys at openjdk.org>
Date:      2021-10-08 09:50:09 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/f89c59f9d151eea3f747155b129e17c9e6e8ec32

8273826: Correct Manifest file name and NPE checks

Backport-of: 03a8d342b86e720d3cba08d540182b4ab161fba3

! src/java.base/share/classes/java/util/jar/JarFile.java
! src/java.base/share/classes/java/util/jar/JarInputStream.java
! src/java.base/share/classes/java/util/jar/JarVerifier.java
! src/java.base/share/classes/sun/security/util/ManifestEntryVerifier.java
+ test/jdk/sun/security/tools/jarsigner/warnings/LowerCaseManifest.java