Make test 002 for bug #65538 not to use https in cafile

ext/openssl/tests/bug65538_002.phpt

@@ -4,12 +4,19 @@ Bug #65538: SSL context "cafile" disallows URL stream wrappers
 <?php
 if (!extension_loaded('openssl')) die('skip, openssl required');
 if (getenv("SKIP_ONLINE_TESTS")) die("skip online test");
+?>
 --FILE--
 <?php
 $clientCtx = stream_context_create(['ssl' => [
-    'cafile' => 'http://curl.haxx.se/ca/cacert.pem'
+	// We don't get any ca list from php.net but it does not matter as we
+	// care about the fact that the external stream is not allowed.
+	// We can't use http://curl.haxx.se/ca/cacert.pem for this test
+	// as it is redirected to https which means the test would depend
+	// on system cafile when opening stream.
+	'cafile' => 'http://www.php.net',
 ]]);
 file_get_contents('https://github.com', false, $clientCtx);
+?>
 --EXPECTF--
 Warning: remote cafile streams are disabled for security purposes in %s on line %d