include/crypto: 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/crypto/sm2.h b/include/crypto/sm2.h
index 78fd4db..2bd0af0 100644
--- a/include/crypto/sm2.h
+++ b/include/crypto/sm2.h
@@ -11,6 +11,8 @@
#ifndef OSSL_CRYPTO_SM2_H
# define OSSL_CRYPTO_SM2_H
+# pragma once
+
# include <openssl/opensslconf.h>
# ifndef OPENSSL_NO_SM2
