From a6bb6344acb65286de67121f1eb249a02f78f82f Mon Sep 17 00:00:00 2001
From: hashmap <hashmap@gmail.com>
Date: Fri, 7 Dec 2018 17:09:26 +0100
Subject: [PATCH] Fix seed thread crash (#2096)

We get overflow in some tests, peraps in real life too
Fixes #2095
---
 p2p/src/peers.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/p2p/src/peers.rs b/p2p/src/peers.rs
index 609fa1fd..ea115031 100644
--- a/p2p/src/peers.rs
+++ b/p2p/src/peers.rs
@@ -409,7 +409,9 @@ impl Peers {
 		}
 
 		// ensure we do not still have too many connected peers
-		let excess_count = (self.peer_count() as usize - rm.len()).saturating_sub(max_count);
+		let excess_count = (self.peer_count() as usize)
+			.saturating_sub(rm.len())
+			.saturating_sub(max_count);
 		if excess_count > 0 {
 			// map peers to addrs in a block to bound how long we keep the read lock for
 			let mut addrs = self