From debcce6a0388bf89d68e04ce2f2a55038a081683 Mon Sep 17 00:00:00 2001
From: DanGould <d@ngould.dev>
Date: Mon, 9 Jan 2023 23:10:07 -0500
Subject: [PATCH] Improve magic bytes push performance

---
 bitcoin/src/psbt/serialize.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bitcoin/src/psbt/serialize.rs b/bitcoin/src/psbt/serialize.rs
index ddbe2ec8..61019f62 100644
--- a/bitcoin/src/psbt/serialize.rs
+++ b/bitcoin/src/psbt/serialize.rs
@@ -53,7 +53,7 @@ impl PartiallySignedTransaction {
         let mut buf: Vec<u8> = Vec::new();
 
         //  <magic>
-        buf.extend(b"psbt");
+        buf.extend_from_slice(b"psbt");
 
         buf.push(0xff_u8);