Use final.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1602944 13f79535-47bb-0310-9956-ffa450edef68
Checkstyle: Line has trailing spaces.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1602945 13f79535-47bb-0310-9956-ffa450edef68