From adc46e5c08df7d3fe68293ee94add19b653b20aa Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Thu, 7 Dec 2023 18:52:11 +1100
Subject: [PATCH] Remove an unnecessary `into`.

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

diff --git a/compiler/rustc_lexer/src/unescape.rs b/compiler/rustc_lexer/src/unescape.rs
index 8c5b2e3635e08..72cb78f82a2f8 100644
--- a/compiler/rustc_lexer/src/unescape.rs
+++ b/compiler/rustc_lexer/src/unescape.rs
@@ -353,7 +353,7 @@ where
             _ => ascii_check(c, chars_should_be_ascii).map(Into::into),
         };
         let end = src.len() - chars.as_str().len();
-        callback(start..end, res.map(Into::into));
+        callback(start..end, res);
     }
 }