Merge pull request #254 from Pi-Cla/clippy

Clippy fixes

src/in-depth/signals-hooked.rs

@@ -2,7 +2,7 @@ use signal_hook::{consts::SIGINT, iterator::Signals};
 use std::{error::Error, thread, time::Duration};
 
 fn main() -> Result<(), Box<dyn Error>> {
-    let mut signals = Signals::new(&[SIGINT])?;
+    let mut signals = Signals::new([SIGINT])?;
 
     thread::spawn(move || {
         for sig in signals.forever() {

src/tutorial/cli-args-struct.rs

@@ -8,7 +8,7 @@ fn main() {
     let path = std::env::args().nth(2).expect("no path given");
 
     let args = Cli {
-        pattern: pattern,
+        pattern,
         path: std::path::PathBuf::from(path),
     };