Fixed checkstyle warnings.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1454461 13f79535-47bb-0310-9956-ffa450edef68
Fixed false positive findbugs warning.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1454462 13f79535-47bb-0310-9956-ffa450edef68