hg: jdk/jdk: 8225179: (regex) Minor Pattern cleanup

[claes.redestad at oracle.com]

Changeset: 28c93b5fb056
Author:    redestad
Date:      2019-06-05 10:07 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/28c93b5fb056

8225179: (regex) Minor Pattern cleanup
Reviewed-by: igerasim

! src/java.base/share/classes/java/util/regex/Pattern.java
! test/micro/org/openjdk/bench/java/util/regex/PatternBench.java