x509_utl.c: Use correct spelling of NULL

diff --git a/lib/libcrypto/x509/x509_utl.c b/lib/libcrypto/x509/x509_utl.c
index 6a907ff..1a043d9 100644 (file)
--- a/lib/libcrypto/x509/x509_utl.c
+++ b/lib/libcrypto/x509/x509_utl.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: x509_utl.c,v 1.8 2023/04/21 06:07:10 tb Exp $ */
+/* $OpenBSD: x509_utl.c,v 1.9 2023/04/23 09:58:38 tb Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project.
  */
@@ -246,7 +246,7 @@ s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, const char *value)
 
        if (!value) {
                X509V3error(X509V3_R_INVALID_NULL_VALUE);
-               return 0;
+               return NULL;
        }
        bn = BN_new();
        if (value[0] == '-') {
@@ -269,7 +269,7 @@ s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, const char *value)
        if (!ret || value[ret]) {
                BN_free(bn);
                X509V3error(X509V3_R_BN_DEC2BN_ERROR);
-               return 0;
+               return NULL;
        }
 
        if (isneg && BN_is_zero(bn))
@@ -279,7 +279,7 @@ s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, const char *value)
        BN_free(bn);
        if (!aint) {
                X509V3error(X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
-               return 0;
+               return NULL;
        }
        if (isneg)
                aint->type |= V_ASN1_NEG;