Bug 8197 : Software error when you have cleaned cookies and try to past the url to...

Bug 8197 : Software error when you have cleaned cookies and try to past the url to opac-topissues.pl

Try to delete cookies and paste the url to opac-topissues.pl.
Without the patch we have a Software error.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
(cherry picked from commit fa00315b2b61c3c1824b7af185317c1b3503c66f)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>