From 7dc8a87a62b1860e3cc7857212d5cb5beb24ec7e Mon Sep 17 00:00:00 2001
From: Manos Pitsidianakis <el13635@mail.ntua.gr>
Date: Wed, 10 Jun 2020 18:07:37 +0300
Subject: [PATCH] Prevent sub overflow in EnvelopeView

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

diff --git a/src/components/mail/view/envelope.rs b/src/components/mail/view/envelope.rs
index 7cc35a991..817c8a224 100644
--- a/src/components/mail/view/envelope.rs
+++ b/src/components/mail/view/envelope.rs
@@ -232,7 +232,7 @@ impl Component for EnvelopeView {
             if self.mode == ViewMode::Raw {
                 clear_area(grid, area, crate::conf::value(context, "theme_default"));
                 context.dirty_areas.push_back(area);
-                get_y(upper_left) - 1
+                get_y(upper_left).saturating_sub(1)
             } else {
                 let (x, y) = write_string_to_grid(
                     &format!("Date: {}", envelope.date_as_str()),