Fix seed thread crash (#2096)

We get overflow in some tests, peraps in real life too Fixes #2095
2018-12-07 17:09:26 +01:00
parent d1b484259b
commit a6bb6344ac
1 changed files with 3 additions and 1 deletions
@@ -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