don't let an invalid time stamp provoke a NULL dereference
don't let an invalid time stamp provoke a NULL dereference

* lib/log_blackbox.c (qb_log_blackbox_print_from_file): Handle
localtime failure by printing the long-int representation rather
than a strftime-formatted one.

Signed-off-by: Angus Salkeld <86b65304d27d8de73dd7d624c33df7e088f8d94b@redhat.com>

davidvossel/libqb,gao-yan/libqb,kgaillot/libqb,rubenk/libqb,kgaillot/libqb,davidvossel/libqb,ClusterLabs/libqb,rubenk/libqb,ClusterLabs/libqb,ClusterLabs/libqb,gao-yan/libqb,kgaillot/libqb