From dc83db273aa348e4070d31c7b772c306d5b200e9 Mon Sep 17 00:00:00 2001
From: davemo88 <david@kasofsk.xyz>
Date: Thu, 11 Mar 2021 21:54:00 -0500
Subject: [PATCH] better derivation path building

---
 src/wallet/signer.rs | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/src/wallet/signer.rs b/src/wallet/signer.rs
index 3ff02425..16f9af30 100644
--- a/src/wallet/signer.rs
+++ b/src/wallet/signer.rs
@@ -225,18 +225,8 @@ impl Signer for DescriptorXKey<ExtendedPrivKey> {
         let derived_key = match self.origin.clone() {
             Some((_fingerprint, origin_path)) => {
                 let deriv_path = DerivationPath::from(
-                    full_path
-                        .into_iter()
-                        .enumerate()
-                        .filter_map(|(i, child)| {
-                            if i >= origin_path.len() {
-                                Some(child)
-                            } else {
-                                None
-                            }
-                        })
-                        .cloned()
-                        .collect::<Vec<ChildNumber>>(),
+                    &full_path.into_iter().cloned().collect::<Vec<ChildNumber>>()
+                        [origin_path.len()..],
                 );
                 self.xkey.derive_priv(&secp, &deriv_path).unwrap()
             }