Hide symbols in hkdf, evp, err, ecdsa, and ec

(part 2 of commit)

ok jsing@

1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/evp/m_null.c b/src/lib/libcrypto/evp/m_null.c
index d09c0007f3..884a47927e 100644
--- a/src/lib/libcrypto/evp/m_null.c
+++ b/src/lib/libcrypto/evp/m_null.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: m_null.c,v 1.12 2022/11/26 16:08:52 tb Exp $ */
+/* $OpenBSD: m_null.c,v 1.13 2023/07/07 13:54:45 beck Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -101,3 +101,4 @@ EVP_md_null(void)
 {
         return (&null_md);
 }
+LCRYPTO_ALIAS(EVP_md_null);