ds: lazy-initialize wbuf

We don't need write buffering unless we encounter slow clients
requesting large responses.  So don't waste a hash slot or
(empty) arrayref for it.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/EvCleanup.pm b/lib/PublicInbox/EvCleanup.pm
index c64e2388..bd4dda11 100644
--- a/lib/PublicInbox/EvCleanup.pm
+++ b/lib/PublicInbox/EvCleanup.pm
@@ -29,7 +29,7 @@ sub once_init () {
         # never drains wbuf.  We can avoid wasting a hash slot by
         # stuffing the read-end of the pipe into the never-to-be-touched
         # wbuf
-        push @{$self->{wbuf}}, $r;
+        $self->{wbuf} = $r;
         $self;
 }