message: make retain_headers more efficient

Avoid an intermediate string allocation; we can write directly to the new buffer.
2026-09-08 19:48:57 +00:00 · 2023-08-25 08:55:30 -07:00
parent ed07a07e11
commit a36eee80f0
1 changed files with 1 additions and 1 deletions
@@ -651,7 +651,7 @@ impl Message {
            if !retain {
                continue;
            }
-            new_data.extend_from_slice(hdr.to_header_string().as_bytes());
+            hdr.write_header(&mut new_data)?;
        }
        new_data.extend_from_slice(b"\r\n");
        new_data.extend_from_slice(&data[body_offset..]);