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_enum.c b/src/lib/libcrypto/asn1/a_enum.c
index 11868cef37..3b6cd9f954 100644
--- a/src/lib/libcrypto/asn1/a_enum.c
+++ b/src/lib/libcrypto/asn1/a_enum.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: a_enum.c,v 1.24 2022/06/25 16:15:18 jsing Exp $ */
+/* $OpenBSD: a_enum.c,v 1.25 2022/07/09 14:46:43 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -141,6 +141,8 @@ ASN1_ENUMERATED_get(const ASN1_ENUMERATED *aenum)
 {
         int64_t val;
 
+        if (aenum == NULL)
+                return 0;
         if (!ASN1_ENUMERATED_get_int64(&val, aenum))
                 return -1;
         if (val < LONG_MIN || val > LONG_MAX) {