Fix clippy warnings (#58)

src/app.rs

@@ -1202,7 +1202,7 @@ impl SearchState {
         // Invalidate when the search query changes.
         if self.query != self.last_query {
             invalidate = true;
-            self.last_query = self.query.clone();
+            self.last_query.clone_from(&self.query);
         }
 
         // Invalidate when the search field changes.
@@ -2002,7 +2002,7 @@ impl ProfApp {
     }
 
     fn multiply_scale_factor(cx: &mut Context, factor: f32) {
-        cx.scale_factor = (cx.scale_factor * factor).min(4.0).max(0.25);
+        cx.scale_factor = (cx.scale_factor * factor).clamp(0.25, 4.0);
     }
 
     fn reset_scale_factor(cx: &mut Context) {

src/archive_data.rs

@@ -33,7 +33,7 @@ fn create_unique_dir<P: AsRef<Path>>(path: P, force: bool) -> io::Result<PathBuf
             let p = path.with_file_name(f);
             let r = create_dir(&p);
             if r.is_ok() {
-                path = p.as_path().to_owned();
+                path.clone_from(&p);
                 break;
             } else if i >= retry_limit {
                 // tried too many times, assume this is a permanent failure

src/main.rs

@@ -214,7 +214,7 @@ impl RandomDataSource {
     }
 
     fn entry_info(rng: &mut rand::rngs::ThreadRng) -> EntryInfo {
-        let kinds = vec![
+        let kinds = [
             "CPU".to_string(),
             "GPU".to_string(),
             "OMP".to_string(),