hg: jdk/sandbox: 8222187: java.util.Base64.Decoder stream adds unexpected null bytes at the end

[chris.hegarty at oracle.com]

Changeset: 865b5ca81009
Author:    lancea
Date:      2020-07-22 10:01 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/865b5ca81009

8222187: java.util.Base64.Decoder stream adds unexpected null bytes at the end
Reviewed-by: lancea, rriggs
Contributed-by: Raffaello Giulietti <raffaello.giulietti at gmail.com>

! src/java.base/share/classes/java/util/Base64.java
! test/jdk/java/util/Base64/TestBase64.java