Fix various FindBugs warnings.

Matthew Swift

21.14.2013 e7b3515b687c082229fc3106ea7badbc2dc61d4a

 opendj3/opendj-rest2ldap/src/main/java/org/forgerock/opendj/rest2ldap/Rest2LDAP.java

@@ -708,7 +708,7 @@
        private AttributeNameStrategy(final AttributeType dnAttribute,
                final AttributeDescription idAttribute, final boolean isServerProvided) {
            this.dnAttribute = AttributeDescription.create(dnAttribute);
            if (dnAttribute.equals(idAttribute)) {
            if (this.dnAttribute.equals(idAttribute)) {
                throw new IllegalArgumentException("DN and ID attributes must be different");
            }
            this.idAttribute = ensureNotNull(idAttribute);