tree de8506e00e81426fc9c6003a1befbb1b4a9be40b
parent d988c1aae8c8b310ef01843b43ac934e6ea5f1ee
author Charles Chan <rascov@gmail.com> 1521577838 -0700
committer Charles Chan <rascov@gmail.com> 1521754827 -0700

Avoid ConcurrentModificationException

Change-Id: I0cadfb3a49a67e3d21d6749c923af55d36589d5c