Vandelay: don't clear match-set when creating new queue

Vandelay: don't clear match-set when creating new queue

This avoids the problem of: enter match set in the UI => enter name for
new queue => match set is cleared.  Match set is still cleared/set when
an existing queue is selected, since existing queues already have a
match set.

Signed-off-by: Bill Erickson <berick@esilibrary.com>