From d8f171a99643e96f0199682c0d088970505e3cbb Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Sat, 13 May 2023 09:50:32 -0700
Subject: [PATCH] Apply clippy::manual_while_let_some

---
 src/book/book.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/book/book.rs b/src/book/book.rs
index 3531de38..96c70abc 100644
--- a/src/book/book.rs
+++ b/src/book/book.rs
@@ -39,9 +39,7 @@ fn create_missing(src_dir: &Path, summary: &Summary) -> Result<()> {
         .chain(summary.suffix_chapters.iter())
         .collect();
 
-    while !items.is_empty() {
-        let next = items.pop().expect("already checked");
-
+    while let Some(next) = items.pop() {
         if let SummaryItem::Link(ref link) = *next {
             if let Some(ref location) = link.location {
                 let filename = src_dir.join(location);