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/ct/ct_local.h b/src/lib/libcrypto/ct/ct_local.h
index cd19ed096a..152ab9d8c4 100644
--- a/src/lib/libcrypto/ct/ct_local.h
+++ b/src/lib/libcrypto/ct/ct_local.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: ct_local.h,v 1.8 2021/12/20 17:19:19 jsing Exp $ */
+/*      $OpenBSD: ct_local.h,v 1.9 2025/11/26 10:19:57 tb Exp $ */
 /*
  * Written by Rob Percival (robpercival@google.com) for the OpenSSL project.
  */
@@ -51,6 +51,9 @@
  * ====================================================================
  */
 
+#ifndef HEADER_CT_LOCAL_H
+#define HEADER_CT_LOCAL_H
+
 #include <stddef.h>
 
 #include <openssl/ct.h>
@@ -258,3 +261,5 @@ int o2i_SCT_signature(SCT *sct, CBS *cbs);
  * Handlers for Certificate Transparency X509v3/OCSP extensions
  */
 extern const X509V3_EXT_METHOD v3_ct_scts[3];
+
+#endif /* HEADER_CT_LOCAL_H */