From 3caa17b468e50c885f56e7872200e9a76815462b Mon Sep 17 00:00:00 2001
From: Charles Gleason <36055314+crgl@users.noreply.github.com>
Date: Tue, 28 Jan 2020 11:27:31 -0500
Subject: [PATCH] Format safety comment as per tidy

Co-Authored-By: Ashley Mannix <ashleymannix@live.com.au>
---
 src/liballoc/collections/btree/map.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/liballoc/collections/btree/map.rs b/src/liballoc/collections/btree/map.rs
index 12174ffcbfa..58cb561938a 100644
--- a/src/liballoc/collections/btree/map.rs
+++ b/src/liballoc/collections/btree/map.rs
@@ -249,7 +249,7 @@ impl<K: Clone + Ord, V: Clone> BTreeClone for BTreeMap<K, V> {
         // the BTree invariants are maintained at the end of the loop
         while siter.front != siter.back {
             if let Some((ok, ov)) = oiter.next() {
-                // This is safe because the `siter.front != siter.back` check
+                // SAFETY: This is safe because the `siter.front != siter.back` check
                 // ensures that `siter` is nonempty
                 let (sk, sv) = unsafe { siter.next_unchecked() };
                 sk.clone_from(ok);