rand/rand_lib.c: keep fixing no-engine configuration.

Reviewed-by: NRichard Levitte <levitte@openssl.org>

crypto/rand/rand_lib.c

@@ -113,7 +113,9 @@ void rand_cleanup_int(void)
         meth->cleanup();
     RAND_set_rand_method(NULL);
     CRYPTO_THREAD_lock_free(rand_meth_lock);
+#ifndef OPENSSL_NO_ENGINE
     CRYPTO_THREAD_lock_free(rand_engine_lock);
+#endif
 }
 
 void RAND_seed(const void *buf, int num)