v2writable: checkpoint: account for lack of {mm}

ExtSearchIdx will not have Msgmap, since it may index
non email blobs in the future (it'll still be usable
with IMAP, but not NNTP).

1 files changed, 8 insertions, 6 deletions

diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm
index f8b7abe1..867e4d2b 100644
--- a/lib/PublicInbox/V2Writable.pm
+++ b/lib/PublicInbox/V2Writable.pm
@@ -609,10 +609,11 @@ sub checkpoint ($;$) {
         }
         my $shards = $self->{idx_shards};
         if ($shards) {
-                my $dbh = $self->{mm}->{dbh};
+                my $mm = $self->{mm};
+                my $dbh = $mm->{dbh} if $mm;
 
                 # SQLite msgmap data is second in importance
-                $dbh->commit;
+                $dbh->commit if $dbh;
 
                 # SQLite overview is third
                 $self->{oidx}->commit_lazy;
@@ -632,11 +633,12 @@ sub checkpoint ($;$) {
 
                 # last_commit is special, don't commit these until
                 # Xapian shards are done:
-                $dbh->begin_work;
+                $dbh->begin_work if $dbh;
                 set_last_commits($self);
-                $dbh->commit;
-
-                $dbh->begin_work;
+                if ($dbh) {
+                        $dbh->commit;
+                        $dbh->begin_work;
+                }
         }
         $self->{total_bytes} += $self->{transact_bytes};
         $self->{transact_bytes} = 0;