Minor update in comments

Author: peterdettman

core/src/main/java/org/bouncycastle/asn1/ocsp/CertStatus.java

@@ -104,6 +104,8 @@ public ASN1Encodable getStatus()
      *                  good        [0]     IMPLICIT NULL,
      *                  revoked     [1]     IMPLICIT RevokedInfo,
      *                  unknown     [2]     IMPLICIT UnknownInfo }
+     *
+     * UnknownInfo ::= NULL
      * </pre>
      */
     public ASN1Primitive toASN1Primitive()