perl/Git.pm: typofix in a comment

No change of behaviour intended. Signed-off-by: Junio C Hamano <gitster@pobox.com>

Junio C Hamano committed Aug 7, 2017 at 15:15 UTC f81935cc4d16e6a346294ea2cd21e0751846b63a
1 file changed +1 -1
perl/Git.pm
+1 -1
@@ -531,7 +531,7 @@ If TIME is not supplied, the current local time is used.
531 =cut
532
533 sub get_tz_offset {
534 - # some systmes don't handle or mishandle %z, so be creative.
534 + # some systems don't handle or mishandle %z, so be creative.
535 my $t = shift || time;
536 my $gm = timegm(localtime($t));
537 my $sign = qw( + + - )[ $gm <=> $t ];