The date variable is assigned new memory via xmemdupz and 2 lines later
it is assigned new memory again via xmalloc, but the first assignment
is never freed nor used.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>