Javadoc.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/compress/trunk@1552762 13f79535-47bb-0310-9956-ffa450edef68
Ensure parent tearDown() is called (thanks to Findbugs)

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/compress/trunk@1552763 13f79535-47bb-0310-9956-ffa450edef68