Make ASN1_{INTEGER,ENUMERATED}_get() return 0 on NULL again

This is the documented behavior which got lost in the recent rewrite.

Mismatch of documentation and reality pointed out by schwarze

ok jsing

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libcrypto/asn1/a_int.c b/src/lib/libcrypto/asn1/a_int.c
index 38a2e1cfa5..1f1e587d39 100644
--- a/src/lib/libcrypto/asn1/a_int.c
+++ b/src/lib/libcrypto/asn1/a_int.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: a_int.c,v 1.42 2022/06/28 19:44:28 jsing Exp $ */
+/* $OpenBSD: a_int.c,v 1.43 2022/07/09 14:46:42 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -297,6 +297,8 @@ ASN1_INTEGER_get(const ASN1_INTEGER *aint)
 {
         int64_t val;
 
+        if (aint == NULL)
+                return 0;
         if (!ASN1_INTEGER_get_int64(&val, aint))
                 return -1;
         if (val < LONG_MIN || val > LONG_MAX) {