A bunch more scopers.

Change-Id: I5c8dbfec4a404d8d1501725a90b383eb3e05c664
Reviewed-on: https://boringssl-review.googlesource.com/29591
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/tls13_both.cc b/ssl/tls13_both.cc
index 696909a..4424318 100644
--- a/ssl/tls13_both.cc
+++ b/ssl/tls13_both.cc
@@ -415,7 +415,7 @@
 
 int tls13_add_certificate(SSL_HANDSHAKE *hs) {
   SSL *const ssl = hs->ssl;
-  CERT *const cert = hs->config->cert;
+  CERT *const cert = hs->config->cert.get();
 
   ScopedCBB cbb;
   CBB *body, body_storage, certificate_list;