Prior to OpenSSL 1.1.0, RAND_cleanup() released all resources used by
the PRNG. As of version 1.1.0, it does nothing and should not be called,
-since since no explicit initialisation or de-initialisation is necessary. See
+since no explicit initialisation or de-initialisation is necessary. See
L<OPENSSL_init_crypto(3)>.
=head1 RETURN VALUE