skip test with openssl < 1.1.0

The test fails, but without any crash
(this test is designed to catch a crash)

Author: remicollet

ext/openssl/tests/bug80747.phpt

@@ -3,7 +3,8 @@ Bug #80747: Providing RSA key size < 512 generates key that crash PHP
 --FILE--
 --SKIPIF--
 <?php
-if (!extension_loaded("openssl")) die("skip");
+if (!extension_loaded("openssl")) die("skip openssl not loaded");
+if (OPENSSL_VERSION_NUMBER < 0x10100000) die("skip OpenSSL >= v1.1.0 required");
 ?>
 --FILE--
 <?php