From eb6abb5d670799e9e1d9a1a4784305aadf5a6914 Mon Sep 17 00:00:00 2001
From: Jake Goulding <jake.goulding@integer32.com>
Date: Fri, 18 Nov 2022 10:57:59 -0500
Subject: [PATCH] fix: avoid unneeded allocation

---
 wal/src/lib.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wal/src/lib.rs b/wal/src/lib.rs
index 550b731a87..e19af40a2d 100644
--- a/wal/src/lib.rs
+++ b/wal/src/lib.rs
@@ -543,14 +543,14 @@ impl SegmentFileReader {
 }
 
 async fn is_segment_stream(f: &mut Pin<Box<dyn AsyncRead>>) -> Result<()> {
-    let mut header = vec![0u8; FILE_TYPE_IDENTIFIER.len()];
+    let mut header = [0u8; FILE_TYPE_IDENTIFIER.len()];
     f.read_exact(&mut header)
         .await
         .context(UnableToReadFileMetadataSnafu)?;
 
     ensure!(
         header == FILE_TYPE_IDENTIFIER,
-        SegmentFileIdentifierMismatchSnafu {}
+        SegmentFileIdentifierMismatchSnafu,
     );
 
     Ok(())