Tests: adjusted worker_shutdown_timeout_h2.t delay for NetBSD.

worker_shutdown_timeout_h2.t

diff --git a/worker_shutdown_timeout_h2.t b/worker_shutdown_timeout_h2.t
index f487c1d..4307f11 100644
--- a/worker_shutdown_timeout_h2.t
+++ b/worker_shutdown_timeout_h2.t
@@ -58,7 +58,7 @@
 my $s = Test::Nginx::HTTP2->new();
 ok($s->new_stream(), 'new stream');
 
-select undef, undef, undef, 0.1;
+select undef, undef, undef, 0.2;
 $t->stop();
 
 TODO: {