address most issues detected by findbugs

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/compress/trunk@1154667 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 8768cc2..2ba7284 100644
--- a/pom.xml
+++ b/pom.xml
@@ -244,7 +244,7 @@
         <configuration>
           <threshold>Normal</threshold>
           <effort>Default</effort>
-          <!--excludeFilterFile>${basedir}/findbugs-exclude-filter.xml</excludeFilterFile-->
+          <excludeFilterFile>${basedir}/findbugs-exclude-filter.xml</excludeFilterFile>
        </configuration>
       </plugin>
     </plugins>