Bug 10851: (follow-up) FIX bad c/p (variable name)

Bug 10851: (follow-up) FIX bad c/p (variable name)

In catalogue.detail.tt, a wrong variable loop was used.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Patches pass QA script and tests.
Additional tests done:
- Receiving issues, setting and unsetting new status
- Display on serial summary page
- Display on subscription detail page, issues tab
- Display on OPAC and staff detail pages, subscription tab
    OPAC: ok
    Staff: ok
- Claiming issues, filtering and status display

Signed-off-by: Galen Charlton <gmc@esilibrary.com>