apply some clippy lints

helix-term/src/commands/typed.rs

@@ -501,15 +501,13 @@ fn parse_mark_register_contents(
             let mut rv_iter = rv.into_iter();
 
             let Some(doc_id) = rv_iter
-                .next()
+                .next().map(|c| c.into_owned())
-                .and_then(|c| Some(c.into_owned()))
                 .and_then(|s| s.try_into().ok())
             else {
                 return Err(anyhow!("Register did not contain valid document id"));
             };
             let Some(history_rev) = rv_iter
-                .next()
+                .next().map(|c| c.into_owned())
-                .and_then(|c| Some(c.into_owned()))
                 .and_then(|s| s.parse().ok())
             else {
                 return Err(anyhow!("Register did not contain valid revision number"));