Fix NPE in opendj-doc-maven-plugin

Matthew Swift

17.33.2016 cae53206eba75c3cec8947ecb462aa597812154f

Fix NPE in opendj-doc-maven-plugin

 opendj-sdk/opendj-doc-maven-plugin/src/main/java/org/forgerock/opendj/maven/doc/GenerateMessageFileMojo.java

@@ -274,8 +274,10 @@
        public int compareTo(MessagePropertyKey k) {
            if (ordinal == k.ordinal) {
                return description.compareTo(k.description);
            } else {
            } else if (ordinal != null && k.ordinal != null) {
                return ordinal.compareTo(k.ordinal);
            } else {
                return 0;
            }
        }
    }