Fix build with older OpenSSL versions

Check that SSL_clear_options and SSL_CTX_clear_options are defined
before using them to avoid compilation failures with older OpenSSL
versions that did not include these macros.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/crypto/tls_openssl.c

@@ -3018,8 +3018,10 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
 #ifdef SSL_OP_NO_TICKET
 	if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
 		SSL_set_options(conn->ssl, SSL_OP_NO_TICKET);
+#ifdef SSL_clear_options
 	else
 		SSL_clear_options(conn->ssl, SSL_OP_NO_TICKET);
+#endif /* SSL_clear_options */
 #endif /*  SSL_OP_NO_TICKET */
 
 #ifdef HAVE_OCSP
@@ -3068,8 +3070,10 @@ int tls_global_set_params(void *tls_ctx,
 #ifdef SSL_OP_NO_TICKET
 	if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
 		SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
+#ifdef SSL_CTX_clear_options
 	else
 		SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
+#endif /* SSL_clear_options */
 #endif /*  SSL_OP_NO_TICKET */
 
 #ifdef HAVE_OCSP