Bug 16966: [QA Follow-up] Check count, not size in template

Bug 16966: [QA Follow-up] Check count, not size in template

The method size is not covered by tests at koha-tmpl/intranet-tmpl/prog/en/modules/tools/cleanborrowers.tt line 163.
The method size is not covered by tests at koha-tmpl/intranet-tmpl/prog/en/modules/tools/cleanborrowers.tt line 183.

Script cleanborrowers passes patrons_to_delete and patrons_to_anonymize to
the template. One is an array ref where we should use 'size', the other is a
Koha::Patrons object where we should use 'count'.
If we don't, we will not anonymize a lot of records ;)

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>