perl: bump the required Perl version to 5.8 from 5.6.[21]

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index d0687f45814eb72da5d8b59c49d86cced01c8715..e645d4a821f7eab28911f508923abd3e9a9dc53b 100755 (executable)
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -7,6 +7,7 @@
 #
 # This program is licensed under the GPLv2
 
+use 5.008;
 use strict;
 use warnings;
 use CGI qw(:standard :escapeHTML -nosticky);
@@ -5191,15 +5192,15 @@ sub git_summary {
 }
 
 sub git_tag {
-       my $head = git_get_head_hash($project);
-       git_header_html();
-       git_print_page_nav('','', $head,undef,$head);
        my %tag = parse_tag($hash);
 
        if (! %tag) {
                die_error(404, "Unknown tag object");
        }
 
+       my $head = git_get_head_hash($project);
+       git_header_html();
+       git_print_page_nav('','', $head,undef,$head);
        git_print_header_div('commit', esc_html($tag{'name'}), $hash);
        print "<div class=\"title_text\">\n" .
              "<table class=\"object_header\">\n" .