Bug 14480: Silences warn from editing patron

Argument "" isn't numeric in numeric lt (<)

TEST PLAN
---------
1) Go to any patron in staff client
2) Click 'Edit'
3) Check error logs
   -- warnings should exist.
4) Apply patch
5) Reload page
   -- warnings should not be triggered.
6) Add restriction and save
7) Go back to edit screen
   -- restriction should be shown
8) Remove restriction and save
9) Go back to edit screen
   -- Should say "Patron is currently unrestricted"
10) Run koha qa test tools.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>

koha-tmpl/intranet-tmpl/prog/en/modules/members/memberentrygen.tt

@@ -959,9 +959,7 @@
               <fieldset class="rows">
                 <legend>Patron restrictions</legend>
 
-                [% IF ( debarments.size < 1 ) %]
-                    <p>Patron is currently unrestricted.</p>
-                [% ELSE %]
+                [% IF ( debarments ) %]
                     <table>
                         <thead>
                             <tr>
@@ -989,7 +987,10 @@
                             [% END %]
                         </tbody>
                     </table>
+                [% ELSE %]
+                    <p>Patron is currently unrestricted.</p>
                 [% END %]
+
                 [% IF CAN_user_borrowers && CAN_user_circulate_manage_restrictions %]
                     <p><a href="#" id="add_manual_restriction">Add manual restriction</a></p>
                     <fieldset id="manual_restriction_form">