ci: fix net.openssl, ensure that it is at least compiled, to avoid future regressions on sweeping vlib changes

vlib/net/openssl/openssl_test.v

@@ -0,0 +1,6 @@
+import net.openssl
+
+fn test_openssl_compiles() {
+	assert openssl.is_used == 1
+	assert true
+}

vlib/net/openssl/ssl_connection.v

@@ -58,7 +58,7 @@ pub fn (mut s SSLConn) shutdown() ! {
 				}
 				if err_res == .ssl_error_want_read {
 					for {
-						ready := @select(s.handle, .read, s.duration)?
+						ready := @select(s.handle, .read, s.duration)!
 						if ready {
 							break
 						}
@@ -66,7 +66,7 @@ pub fn (mut s SSLConn) shutdown() ! {
 					continue
 				} else if err_res == .ssl_error_want_write {
 					for {
-						ready := @select(s.handle, .write, s.duration)?
+						ready := @select(s.handle, .write, s.duration)!
 						if ready {
 							break
 						}