include/internal: add a few missing #pragma once directives
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/14096)
diff --git a/include/internal/refcount.h b/include/internal/refcount.h
index 5899e8c..e5c4aca 100644
--- a/include/internal/refcount.h
+++ b/include/internal/refcount.h
@@ -8,6 +8,7 @@
*/
#ifndef OSSL_INTERNAL_REFCOUNT_H
# define OSSL_INTERNAL_REFCOUNT_H
+# pragma once
# include <openssl/e_os2.h>