fix loading password indices

resources/_comment.cgi

@@ -65,7 +65,7 @@ unless ( $c{article} && $c{article} =~ m,^[-/a-z0-9]+$,
 }
 
 my $comment_index = load_index( '_comment_index' );
-my $password_index = load_index( '_comment_passwords' );
+my $password_index = load_index( '_comment_passwords', 1 );
 
 unless ( $password_index->{$c{article}}     # comments are enabled
       && ( !$c{parent} || $comment_index->{$c{article}}{$c{parent}} ) ) # parent exists