Tests: adjusted TODO for alerts not seen after c7a8bdf5af55.
diff --git a/h2_ssl_proxy_cache.t b/h2_ssl_proxy_cache.t
index 9cc70b8..2a9d605 100644
--- a/h2_ssl_proxy_cache.t
+++ b/h2_ssl_proxy_cache.t
@@ -121,7 +121,8 @@
# "aio_write" is used to produce "open socket ... left in connection" alerts.
$t->todo_alerts() if $t->read_file('nginx.conf') =~ /aio_write on/
- and $t->read_file('nginx.conf') =~ /aio threads/ and $^O eq 'linux';
+ and $t->read_file('nginx.conf') =~ /aio threads/ and $^O eq 'linux'
+ and !$t->has_version('1.21.4');
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