From 81f50fd7e3c6358b1039049f7145df6c84f44a27 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Fri, 22 Dec 2023 08:41:15 +1100
Subject: [PATCH] Fix weird code setting in `create_feature_err`.

---
 compiler/rustc_session/src/session.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs
index 6e69864aec4..272e231d3ed 100644
--- a/compiler/rustc_session/src/session.rs
+++ b/compiler/rustc_session/src/session.rs
@@ -471,7 +471,7 @@ impl Session {
     ) -> DiagnosticBuilder<'a> {
         let mut err = self.parse_sess.create_err(err);
         if err.code.is_none() {
-            err.code = std::option::Option::Some(error_code!(E0658));
+            err.code(error_code!(E0658));
         }
         add_feature_diagnostics(&mut err, &self.parse_sess, feature);
         err