From c341e21dc60ff1a7d592091e9ec7762193b70fe2 Mon Sep 17 00:00:00 2001
From: Andrew Poelstra <apoelstra@wpsoftware.net>
Date: Fri, 6 Oct 2017 19:56:50 +0000
Subject: [PATCH] remove unnecessary `mut` that nightly rustc has learned to
 detect

---
 src/blockdata/blockchain.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/blockdata/blockchain.rs b/src/blockdata/blockchain.rs
index cb82e939..3b5b7403 100644
--- a/src/blockdata/blockchain.rs
+++ b/src/blockdata/blockchain.rs
@@ -372,7 +372,7 @@ impl Blockchain {
 
     fn replace_txdata(&mut self, hash: &Uint256, txdata: Vec<Transaction>, has_txdata: bool) -> Result<(), util::Error> {
         match self.tree.lookup_mut(hash, 256) {
-            Some(mut existing_block) => {
+            Some(existing_block) => {
                 existing_block.block.txdata.clone_from(&txdata);
                 existing_block.has_txdata = has_txdata;
                 Ok(())