s3:lib: Fix the debug message for adding cache entries.

s3:lib: Fix the debug message for adding cache entries.

To get correct values, we need to cast 'timeout' to 'long int' first in
order to do calculation in that integer space! Calculations are don in
the space of the lvalue!

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13848

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 5822449a7340f53987ce4c04851652427f5b49e8)

Autobuild-User(v4-10-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-10-test): Fri Mar 22 12:50:24 UTC 2019 on sn-devel-144