Cast time_t to long long in order to print it.

Cast time_t to long long in order to print it.

time_t is only specified as an integer type per POSIX.  To reliably
print it, better cast it to "long long", which is at least 64 bits wide
and can represent values beyond 2038.

Printing as a "long" could cause problems on ILP32 systems using a 64
bits time_t (eg OpenBSD/armv7).

Signed-off-by: Jeremie Courreges-Anglas <jca@wxcvbn.org>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <87efq4havl.fsf@ritchie.wxcvbn.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg15640.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
(cherry picked from commit 4ac769fb848619dcb39589af29302d8c2d698258)