git: openjdk/jdk: 8254576: ZGC: Clean up timers in roots iterators

[Per Liden]

Changeset: 5d6a6255
Author:    Per Liden <pliden at openjdk.org>
Date:      2020-10-13 09:49:14 +0000
URL:       https://git.openjdk.java.net/jdk/commit/5d6a6255

8254576: ZGC: Clean up timers in roots iterators

Reviewed-by: eosterlund, stefank

! src/hotspot/share/gc/z/zRootsIterator.cpp
! src/hotspot/share/gc/z/zRootsIterator.hpp