git: openjdk/jtharness: ResourceTable: minor cleanup and more unit tests

[Dmitry Bessonov]

Changeset: 744bbb9d
Author:    Dmitry Bessonov <dbessono at openjdk.org>
Date:      2020-10-01 20:01:28 +0000
URL:       https://git.openjdk.java.net/jtharness/commit/744bbb9d

ResourceTable: minor cleanup and more unit tests

! src/com/sun/javatest/ResourceTable.java
! unit-tests/com/sun/javatest/ResourceTableTest.java