Bug 32307: Fix local cover images

We were not calling the function here!

Signed-off-by: Tomas Cohen Arazi <[email protected]>

Author: joubu

koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt

@@ -1630,7 +1630,7 @@ Note that permanent location is a code, and location may be an authval.
             });
         [% ELSE %]
             $(window).load(function() {
-                verify_cover_images;
+                verify_cover_images();
             });
         [% END %]
     </script>