From 252fa319ebd408dc599e0866330619f069749aba Mon Sep 17 00:00:00 2001
From: Magamedrasul Ibragimov <curryrasul@gmail.com>
Date: Wed, 2 Nov 2022 14:45:10 +0300
Subject: [PATCH] refactor: change &mut self to &self

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

diff --git a/src/tree.rs b/src/tree.rs
index 069702a..f22250a 100644
--- a/src/tree.rs
+++ b/src/tree.rs
@@ -142,7 +142,7 @@ where
     }
 
     // Hashes the right couple for the key
-    fn hash_couple(&mut self, depth: usize, key: usize) -> H::Fr {
+    fn hash_couple(&self, depth: usize, key: usize) -> H::Fr {
         let b = key & !1;
         H::hash(&[
             self.get_elem(Key(depth, b)),