Suppress warnings for streams deliberately left unclosed

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1441247 13f79535-47bb-0310-9956-ffa450edef68
Ensure stream is closed

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/io/trunk@1441248 13f79535-47bb-0310-9956-ffa450edef68