Use 64 bit BN_ULONG on 64 bit Windows platforms.

64 bit Windows is a special LLP snowflake and it is currently incorrectly
using 32 bit BN_ULONG, since _LP64 is not defined. Enable 64 bit BN_ULONG
if _LP64 or _WIN64 is defined.

ok tb@

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libcrypto/bn/bn.h b/src/lib/libcrypto/bn/bn.h
index 7c98d4e853..e64fcf355f 100644
--- a/src/lib/libcrypto/bn/bn.h
+++ b/src/lib/libcrypto/bn/bn.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: bn.h,v 1.82 2025/11/05 13:00:26 jsing Exp $ */
+/* $OpenBSD: bn.h,v 1.83 2025/11/07 13:41:40 jsing Exp $ */
 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -140,7 +140,7 @@
 extern "C" {
 #endif
 
-#ifdef _LP64
+#if defined(_LP64) || defined(_WIN64)
 #undef  BN_LLONG
 #define BN_ULONG        uint64_t
 #define BN_LONG         int64_t