refactor: Fix clippy warnings (#488)

* refactor: Use `repeat_n` instead of `repeat` and `take`

Fixes `clippy::manual_repeat_n`

* refactor: Remove unnecessary let binding

src/display.rs

@@ -12,7 +12,7 @@ use chrono::{DateTime, Local, TimeZone, Utc};
 use std::cmp::max;
 use std::cmp::min;
 use std::fs;
-use std::iter::repeat;
+use std::iter::repeat_n;
 use std::path::Path;
 use thousands::Separable;
 
@@ -155,7 +155,7 @@ pub fn draw_it(
         allowed_width - longest_string_length - 7
     };
 
-    let first_size_bar = repeat(BLOCKS[0]).take(max_bar_length).collect();
+    let first_size_bar = repeat_n(BLOCKS[0], max_bar_length).collect();
 
     let display_data = DisplayData {
         initial: idd,
@@ -298,12 +298,9 @@ fn pad_or_trim_filename(node: &DisplayNode, indent: &str, display_data: &Display
     );
 
     // Add spaces after the filename so we can draw the % used bar chart.
-    let name_and_padding = name
-        + " "
+    name + " "
         .repeat(display_data.longest_string_length - width)
-            .as_str();
-
-    name_and_padding
+        .as_str()
 }
 
 fn maybe_trim_filename(name_in: String, indent: &str, display_data: &DisplayData) -> String {
@@ -594,7 +591,7 @@ mod tests {
             size: 2_u64.pow(size),
             children: vec![],
         };
-        let first_size_bar = repeat(BLOCKS[0]).take(13).collect();
+        let first_size_bar = repeat_n(BLOCKS[0], 13).collect();
         let dd = DrawData {
             indent: "".into(),
             percent_bar: first_size_bar,