From f2a83a8efcdd2430a3349fdea964122f4da9a0b6 Mon Sep 17 00:00:00 2001
From: SW van Heerden <swvheerden@gmail.com>
Date: Thu, 5 Dec 2024 14:40:11 +0200
Subject: [PATCH] change to saturating sub

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

diff --git a/src/sharechain/in_memory.rs b/src/sharechain/in_memory.rs
index 26d64ea..2415d81 100644
--- a/src/sharechain/in_memory.rs
+++ b/src/sharechain/in_memory.rs
@@ -782,7 +782,7 @@ impl ShareChain for InMemoryShareChain {
                 };
                 if let Some(level) = p2_chain_read_lock.level_at_height(height) {
                     if let Some(block) = level.block_in_main_chain() {
-                        let index = i_have_blocks.len() - counter - 1;
+                        let index = i_have_blocks.len().saturating_sub(counter).saturating_sub(1);
                         i_have_blocks[index] = (height, block.hash);
                         counter += 1;
                     }