Avoid shadowing the cbs function parameter in tlsext_alpn_server_parse()

ok jsing

1 files changed, 4 insertions, 6 deletions

diff --git a/src/lib/libssl/ssl_tlsext.c b/src/lib/libssl/ssl_tlsext.c
index f417f59b8e..a42856264b 100644
--- a/src/lib/libssl/ssl_tlsext.c
+++ b/src/lib/libssl/ssl_tlsext.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_tlsext.c,v 1.128 2022/08/04 09:27:36 tb Exp $ */
+/* $OpenBSD: ssl_tlsext.c,v 1.129 2022/08/15 10:46:53 tb Exp $ */
 /*
  * Copyright (c) 2016, 2017, 2019 Joel Sing <jsing@openbsd.org>
  * Copyright (c) 2017 Doug Hogan <doug@openbsd.org>
@@ -86,7 +86,7 @@ tlsext_alpn_check_format(CBS *cbs)
 static int
 tlsext_alpn_server_parse(SSL *s, uint16_t msg_types, CBS *cbs, int *alert)
 {
-        CBS alpn;
+        CBS alpn, selected_cbs;
         const unsigned char *selected;
         unsigned char selected_len;
         int r;
@@ -111,11 +111,9 @@ tlsext_alpn_server_parse(SSL *s, uint16_t msg_types, CBS *cbs, int *alert)
             s->ctx->internal->alpn_select_cb_arg);
 
         if (r == SSL_TLSEXT_ERR_OK) {
-                CBS cbs;
+                CBS_init(&selected_cbs, selected, selected_len);
 
-                CBS_init(&cbs, selected, selected_len);
-
-                if (!CBS_stow(&cbs, &s->s3->alpn_selected,
+                if (!CBS_stow(&selected_cbs, &s->s3->alpn_selected,
                     &s->s3->alpn_selected_len)) {
                         *alert = SSL_AD_INTERNAL_ERROR;
                         return 0;