Bug 23260: Fix database update

Signed-off-by: Martin Renvoize <martin.renvoize@openfifth.co.uk>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

installer/data/mysql/atomicupdate/bug_23260.pl

@@ -12,6 +12,7 @@ return {
         $dbh->do(
             q{
             ALTER TABLE items_last_borrower
+            MODIFY COLUMN borrowernumber int(11) NULL,
             MODIFY created_on timestamp NOT NULL DEFAULT current_timestamp()
         }
         );