daemon: simplify socket inheriting, slightly

IO::Handle->new_from_fd has existed since at least 1996,
so it should be safe to depend on at this point.

diff --git a/lib/PublicInbox/Daemon.pm b/lib/PublicInbox/Daemon.pm
index 9f33c05af5c6bb0e2066970f72121e359a30d2b1..f0be034c57ef8054f65ac5bf374b61c71d599b4a 100644 (file)
--- a/lib/PublicInbox/Daemon.pm
+++ b/lib/PublicInbox/Daemon.pm
@@ -206,8 +206,7 @@ sub inherit () {
        my $end = $fds + 2; # LISTEN_FDS_START - 1
        my @rv = ();
        foreach my $fd (3..$end) {
-               my $s = IO::Handle->new;
-               $s->fdopen($fd, 'r');
+               my $s = IO::Handle->new_from_fd($fd, 'r');
                if (my $k = sockname($s)) {
                        $listener_names{$k} = $s;
                        push @rv, $s;