Omitting the mode/padding in a transformation string eg: "AES/ /NoPadding" throws NoSuchAlgorithmException. This patch restores the behavior by ensuring that empty mode or padding strings are interpreted as null.
Testing done for : tier1 - fastdebug level JBS: [JDK-8358159](https://bugs.openjdk.org/browse/JDK-8358159) ------------- Commit messages: - JDK-8358159: empty mode/padding in cipher transformations. Changes: https://git.openjdk.org/jdk/pull/25547/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25547&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8358159 Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/25547.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/25547/head:pull/25547 PR: https://git.openjdk.org/jdk/pull/25547
