use if let

Author: ada4a

clippy_lints/src/unnested_or_patterns.rs

@@ -383,15 +383,14 @@ fn take_pat(from: &mut Pat) -> Pat {
 /// in `tail_or` if there are any and return if there were.
 fn extend_with_tail_or(target: &mut Pat, tail_or: ThinVec<Box<Pat>>) -> bool {
     fn extend(target: &mut Pat, mut tail_or: ThinVec<Box<Pat>>) {
-        match &mut target.kind {
-            // On an existing or-pattern in the target, append to it.
-            Or(ps) => ps.append(&mut tail_or),
-            // Otherwise convert the target to an or-pattern.
-            _ => {
-                let mut init_or = thin_vec![Box::new(take_pat(target))];
-                init_or.append(&mut tail_or);
-                target.kind = Or(init_or);
-            },
+        // On an existing or-pattern in the target, append to it,
+        // otherwise convert the target to an or-pattern.
+        if let Or(ps) = &mut target.kind {
+            ps.append(&mut tail_or);
+        } else {
+            let mut init_or = thin_vec![Box::new(take_pat(target))];
+            init_or.append(&mut tail_or);
+            target.kind = Or(init_or);
         }
     }