Bug 17068: empty <li> in opac-reserve.tt

Bug 17068: empty <li> in opac-reserve.tt

empty HTML list item on 'holds' page, to test:
- sign in as user
- attempt to place hold
- view source in between 'holds note' textarea & <!-- ITEM HOLDS --> comment
- note empty <li>
- apply patch
- repeat process above up until patch
- no more empty <li>

Signed-off-by: Jason Robb <jrobb@sekls.org>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit 17a5ef51199736235f0c3fd35c84be124ecc166e)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>