libcrypto: add header guards to *_local.h

An upcoming change requires the inclusion of asn1_local.h in x509_local.h
which doesn't work due to missing header guards. Add guards to all local
headers that don't have them, although reacharounds and multiple inclusions
are unlikely to occur for most of those.

ok jsing

1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/libcrypto/cast/cast_local.h b/src/lib/libcrypto/cast/cast_local.h
index 5fb9911105..c8b89071c5 100644
--- a/src/lib/libcrypto/cast/cast_local.h
+++ b/src/lib/libcrypto/cast/cast_local.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: cast_local.h,v 1.2 2023/07/08 07:25:43 jsing Exp $ */
+/* $OpenBSD: cast_local.h,v 1.3 2025/11/26 10:19:57 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -56,6 +56,9 @@
  * [including the GNU Public Licence.]
  */
 
+#ifndef HEADER_CAST_LOCAL_H
+#define HEADER_CAST_LOCAL_H
+
 #undef c2l
 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
                          l|=((unsigned long)(*((c)++)))<< 8L, \
@@ -214,3 +217,5 @@ extern const CAST_LONG CAST_S_table4[256];
 extern const CAST_LONG CAST_S_table5[256];
 extern const CAST_LONG CAST_S_table6[256];
 extern const CAST_LONG CAST_S_table7[256];
+
+#endif /* HEADER_CAST_LOCAL_H */