From 0da6cd08c7ea4f4c5bfcfbb85d8372ea3b72ac0b Mon Sep 17 00:00:00 2001
From: Henrik Friedrichsen <henrik@affekt.org>
Date: Wed, 3 Apr 2019 14:16:36 +0200
Subject: [PATCH] fix: prevent usize overflow when moving down in listview

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

diff --git a/src/ui/listview.rs b/src/ui/listview.rs
index bd6a3ae..37a0b0e 100644
--- a/src/ui/listview.rs
+++ b/src/ui/listview.rs
@@ -211,7 +211,7 @@ impl<I: ListItem> ViewExt for ListView<I> {
                     return Ok(CommandResult::Consumed(None));
                 }
 
-                if dir == "down" && self.selected < len - 1 {
+                if dir == "down" && self.selected < len.saturating_sub(1) {
                     self.move_focus(amount);
                     return Ok(CommandResult::Consumed(None));
                 }