refactor(nix-compat/nar/writer): use clone_into r/6854

Equivalent to the existing code, but a little less cryptic.

Change-Id: Ib9b2f9aedddc84d0e79840bba4cce01f92d9bc56
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9766
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

2 files changed, 2 insertions, 4 deletions

diff --git a/tvix/nix-compat/src/nar/writer/async.rs b/tvix/nix-compat/src/nar/writer/async.rs
index 2b73e56737ce..dd5c72ac8913 100644
--- a/tvix/nix-compat/src/nar/writer/async.rs
+++ b/tvix/nix-compat/src/nar/writer/async.rs
@@ -203,8 +203,7 @@ impl<'a, 'w> Directory<'a, 'w> {
                         _prev_name.as_bstr(),
                         name.as_bstr()
                     );
-                    _prev_name.clear();
-                    _prev_name.extend_from_slice(name);
+                    name.clone_into(_prev_name);
                 }
                 self.node.write(&wire::TOK_PAR).await?;
             }
diff --git a/tvix/nix-compat/src/nar/writer/sync.rs b/tvix/nix-compat/src/nar/writer/sync.rs
index 9290e4a5bdfe..071aab831c20 100644
--- a/tvix/nix-compat/src/nar/writer/sync.rs
+++ b/tvix/nix-compat/src/nar/writer/sync.rs
@@ -192,8 +192,7 @@ impl<'a, 'w> Directory<'a, 'w> {
                         _prev_name.as_bstr(),
                         name.as_bstr()
                     );
-                    _prev_name.clear();
-                    _prev_name.extend_from_slice(name);
+                    name.clone_into(_prev_name);
                 }
                 self.node.write(&wire::TOK_PAR)?;
             }