index: v2: parallel by default

InboxWritable should only set $v2w->{parallel} if the $parallel
flag is defined to 0 or 1.  We want indexing a new inbox to
utilize SMP, just like --reindex.

-index once again allows -j0/--jobs=0 to force single-process
use, and we'll be ensuring that works in tests to maintain
performance on small systems.

Fixes: 61a2fff5b34a3e32 ("admin: move index_inbox over")

1 files changed, 1 insertions, 1 deletions

diff --git a/t/nntpd.t b/t/nntpd.t
index 69f72ce1..eee67ea6 100644
--- a/t/nntpd.t
+++ b/t/nntpd.t
@@ -53,7 +53,7 @@ $ibx = PublicInbox::Inbox->new($ibx);
         my $len;
 
         $ibx = PublicInbox::InboxWritable->new($ibx);
-        my $im = $ibx->importer;
+        my $im = $ibx->importer(0);
 
         # ensure successful message delivery
         {