Change the alert callback return type from int to void.

There is nothing for the handler to really signal, since it cannot change
the fact that we received an alert. While here use TLS13_IO_FAILURE instead
of hardcoding -1.

ok tb@

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libssl/tls13_internal.h b/src/lib/libssl/tls13_internal.h
index 71abb6c443..43b65d6162 100644
--- a/src/lib/libssl/tls13_internal.h
+++ b/src/lib/libssl/tls13_internal.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls13_internal.h,v 1.19 2019/02/14 17:55:32 jsing Exp $ */
+/* $OpenBSD: tls13_internal.h,v 1.20 2019/02/21 17:09:51 jsing Exp $ */
 /*
  * Copyright (c) 2018 Bob Beck <beck@openbsd.org>
  * Copyright (c) 2018 Theo Buehler <tb@openbsd.org>
@@ -36,7 +36,7 @@ __BEGIN_HIDDEN_DECLS
 #define TLS13_IO_WANT_POLLIN    -2
 #define TLS13_IO_WANT_POLLOUT   -3
 
-typedef int (*tls13_alert_cb)(uint8_t _alert_level, uint8_t _alert_desc,
+typedef void (*tls13_alert_cb)(uint8_t _alert_level, uint8_t _alert_desc,
     void *_cb_arg);
 typedef int (*tls13_post_handshake_cb)(void *_cb_arg);
 typedef ssize_t (*tls13_read_cb)(void *_buf, size_t _buflen, void *_cb_arg);