Improve BN_bn2bin() error check for readability

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/ecdsa/ecdsa.c b/src/lib/libcrypto/ecdsa/ecdsa.c
index 20d605cafd..d0cc846af3 100644
--- a/src/lib/libcrypto/ecdsa/ecdsa.c
+++ b/src/lib/libcrypto/ecdsa/ecdsa.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ecdsa.c,v 1.2 2023/07/05 12:27:36 tb Exp $ */
+/* $OpenBSD: ecdsa.c,v 1.3 2023/07/05 12:49:42 tb Exp $ */
 /* ====================================================================
  * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
  *
@@ -196,7 +196,7 @@ ecdsa_prepare_digest(const unsigned char *digest, int digest_len,
         const EC_GROUP *group;
         int digest_bits, order_bits;
 
-        if (!BN_bin2bn(digest, digest_len, e)) {
+        if (BN_bin2bn(digest, digest_len, e) == NULL) {
                 ECDSAerror(ERR_R_BN_LIB);
                 return 0;
         }