clippy: write the changelog body loop as while let (rust 1.98)

src/debian/changelog.rs

@@ -151,10 +151,7 @@ fn parse_one_entry(
     // --- Body until trailer line ` -- Name <email>  Date`
     let mut body_lines: Vec<String> = Vec::new();
     let mut trailer: Option<String> = None;
-    loop {
+    while let Some(line) = lines.peek().copied() {
-        let Some(line) = lines.peek().copied() else {
-            break;
-        };
         let line = line.trim_end();
         if line.starts_with(" -- ") {
             trailer = lines.next().map(|l| l.trim_end().to_string());