Calling Subordinate transaction to enlist with empty parameter list ends with IndexOutOfBoundsException

When calling enlist method on com.arjuna.ats.internal.jta.transaction.jts.TransactionImple when parameters are defined as empty array the IndexOutOfBoundsException exception is thrown.

The method call I do refer to is
https://github.com/jbosstm/narayana/blob/master/ArjunaJTS/jtax/classes/com/arjuna/ats/internal/jta/transaction/jts/TransactionImple.java#L517