From b6d490d05300a9db9cdf9929baa9b984bee9f3f6 Mon Sep 17 00:00:00 2001
From: Rene Vergara <rene@vergara.network>
Date: Mon, 28 Oct 2024 12:25:34 -0500
Subject: [PATCH] fix(rust): orchard hash length check

---
 librustzcash-wrapper/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/librustzcash-wrapper/src/lib.rs b/librustzcash-wrapper/src/lib.rs
index df054c6..1673061 100644
--- a/librustzcash-wrapper/src/lib.rs
+++ b/librustzcash-wrapper/src/lib.rs
@@ -1590,7 +1590,7 @@ pub extern "C" fn rust_wrapper_combine_orchard_nodes(
     ){
     let left_in: Vec<u8> = marshall_from_haskell_var(left, left_len, RW);
     let right_in: Vec<u8> = marshall_from_haskell_var(right, right_len, RW);
-    if left_in.len() > 1 {
+    if left_in.len() == 1 {
             let n = MerkleHashOrchard::combine(Level::new(level), &MerkleHashOrchard::empty_leaf(), &MerkleHashOrchard::empty_leaf());
             let h = Hhex { bytes: n.to_bytes().to_vec() };
             marshall_to_haskell_var(&h, out, out_len, RW);