From 50bfed72475970c749738b5eb61da017303ec7a2 Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <el13635@mail.ntua.gr>
Date: Sat, 8 Feb 2020 13:45:55 +0200
Subject: [PATCH] ui: fix subtraction overflow

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

diff --git a/src/components/mail/view.rs b/src/components/mail/view.rs
index 8e76677c9..f302d1b4e 100644
--- a/src/components/mail/view.rs
+++ b/src/components/mail/view.rs
@@ -560,7 +560,7 @@ impl Component for MailView {
                 if !context.settings.pager.headers_sticky {
                     let height_p = self.pager.size().1;
 
-                    let height = height!(area) - y - 1;
+                    let height = height!(area).saturating_sub(y).saturating_sub(1);
                     if self.pager.cursor_pos() >= self.headers_no {
                         get_y(upper_left)
                     } else if height_p > height && self.headers_cursor < self.headers_no + 1 {