Fix tests if Python compiled without SSL (#5367)

diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
index b66d91d..f54802c 100644
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -2134,6 +2134,8 @@
         port = support.find_unused_port()
         srv_proto = MySendfileProto(loop=self.loop, close_after=close_after)
         if is_ssl:
+            if not ssl:
+                self.skipTest("No ssl module")
             srv_ctx = test_utils.simple_server_sslcontext()
             cli_ctx = test_utils.simple_client_sslcontext()
         else: