Tests: adjusted worker_shutdown_timeout_h2.t shutdown delay more.
A signal is made sure to be sent after nginx processed HEADERS,
while not unnecessarily delaying it.
diff --git a/worker_shutdown_timeout_h2.t b/worker_shutdown_timeout_h2.t
index 4307f11..7265dd8 100644
--- a/worker_shutdown_timeout_h2.t
+++ b/worker_shutdown_timeout_h2.t
@@ -58,7 +58,9 @@
my $s = Test::Nginx::HTTP2->new();
ok($s->new_stream(), 'new stream');
-select undef, undef, undef, 0.2;
+$s->h2_ping('SEE-THIS');
+$s->read(all => [{ type => 'PING' }]);
+
$t->stop();
TODO: {
