nntpd: support systemd FD inheritance + signals

Avoid depending on IO::Socket::INET if we can help it,
we do not need to bloat ourselves with lot of that
functionality.

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/PublicInbox/NewsGroup.pm b/lib/PublicInbox/NewsGroup.pm
index 6cc3f248..b8aed529 100644
--- a/lib/PublicInbox/NewsGroup.pm
+++ b/lib/PublicInbox/NewsGroup.pm
@@ -36,7 +36,10 @@ sub gcf {
 }
 
 sub mm {
-        my ($self) = @_;
+        my ($self, $check_only) = @_;
+        if ($check_only) {
+                return eval { PublicInbox::Msgmap->new($self->{git_dir}) };
+        }
         $self->{mm} ||= eval {
                 my $mm = PublicInbox::Msgmap->new($self->{git_dir});