1 files changed, 4 insertions, 0 deletions
diff --git a/lib/PublicInbox/Qspawn.pm b/lib/PublicInbox/Qspawn.pm
index 5a300644..cb3dc516 100644
--- a/lib/PublicInbox/Qspawn.pm
+++ b/lib/PublicInbox/Qspawn.pm
@@ -281,6 +281,10 @@ sub psgi_return {
                                                                  $buf, $filter);
                          $wcb->($r);
                  }
+
+                # Workaround a leak under Perl 5.16.3 when combined with
+                # Plack::Middleware::Deflater:
+                $wcb = undef;
          };
          $limiter ||= $def_limiter ||= PublicInbox::Qspawn::Limiter->new(32);
          my $start_cb = sub { # may run later, much later...