sign_setup: split another check into two

diff --git a/lib/libcrypto/ecdsa/ecs_ossl.c b/lib/libcrypto/ecdsa/ecs_ossl.c
index 441033e..73aed6e 100644 (file)
--- a/lib/libcrypto/ecdsa/ecs_ossl.c
+++ b/lib/libcrypto/ecdsa/ecs_ossl.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ecs_ossl.c,v 1.57 2023/07/03 10:21:25 tb Exp $ */
+/* $OpenBSD: ecs_ossl.c,v 1.58 2023/07/03 11:06:28 tb Exp $ */
 /*
  * Written by Nils Larsch for the OpenSSL project
  */
@@ -140,7 +140,11 @@ ossl_ecdsa_sign_setup(EC_KEY *eckey, BN_CTX *in_ctx, BIGNUM **out_kinv,
        BN_free(*out_r);
        *out_r = NULL;
 
-       if (eckey == NULL || (group = EC_KEY_get0_group(eckey)) == NULL) {
+       if (eckey == NULL) {
+               ECDSAerror(ERR_R_PASSED_NULL_PARAMETER);
+               goto err;
+       }
+       if ((group = EC_KEY_get0_group(eckey)) == NULL) {
                ECDSAerror(ERR_R_PASSED_NULL_PARAMETER);
                goto err;
        }