From 9d9a2d53e13d5de08440349e97b2eb393e7833dc Mon Sep 17 00:00:00 2001
From: ChrisCho-H <c.hyunhum@gmail.com>
Date: Fri, 18 Oct 2024 16:39:50 +0900
Subject: [PATCH] refactor: compute recid in a single line

---
 bitcoin/src/sign_message.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/bitcoin/src/sign_message.rs b/bitcoin/src/sign_message.rs
index 094b66aef..0b3030de5 100644
--- a/bitcoin/src/sign_message.rs
+++ b/bitcoin/src/sign_message.rs
@@ -101,11 +101,7 @@ mod message_signing {
         pub fn serialize(&self) -> [u8; 65] {
             let (recid, raw) = self.signature.serialize_compact();
             let mut serialized = [0u8; 65];
-            serialized[0] = 27;
-            serialized[0] += recid.to_i32() as u8;
-            if self.compressed {
-                serialized[0] += 4;
-            }
+            serialized[0] = recid.to_i32() as u8 + if self.compressed { 31 } else { 27 };
             serialized[1..].copy_from_slice(&raw[..]);
             serialized
         }