From 9dc4be9dfb9432174a315c2deb0b232615504025 Mon Sep 17 00:00:00 2001
From: LLFourn <lloyd.fourn@gmail.com>
Date: Mon, 11 Apr 2022 13:48:48 +1000
Subject: [PATCH] Make sure at least one utxo is there for Tr input

We can only omit non_witness_utxo for Tr if it has witness_utxo.
---
 src/psbt/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/psbt/mod.rs b/src/psbt/mod.rs
index 3834d6a5e..4dd1c95c8 100644
--- a/src/psbt/mod.rs
+++ b/src/psbt/mod.rs
@@ -965,7 +965,7 @@ impl PsbtInputExt for psbt::Input {
                 }
                 None => {
                     match derived {
-                        Descriptor::Tr(_) => { /*Tr outputs can always omit non_witness_utxo*/ }
+                        Descriptor::Tr(_) if check_witness_utxo => { /*can be omited*/ }
                         _ => return Err(UpdateInputError::NonWitnessUtxoCheck),
                     }
                 }