Run cargo clippy (#541)

src/sys/syscall/mod.rs

@@ -104,7 +104,7 @@ pub fn dispatcher(n: usize, arg1: usize, arg2: usize, arg3: usize, arg4: usize)
             let buf_len = arg3;
             let buf = unsafe { core::slice::from_raw_parts_mut(buf_ptr, buf_len) };
             if let Ok(addr) = service::accept(handle) {
-                buf[0..buf_len].clone_from_slice(&addr.as_bytes());
+                buf[0..buf_len].clone_from_slice(addr.as_bytes());
                 0
             } else {
                 -1 as isize as usize

src/usr/http.rs

@@ -153,7 +153,7 @@ pub fn main(args: &[&str]) -> Result<(), ExitCode> {
             print!("{}", csi_reset);
         }
         let req = req.join("");
-        syscall::write(handle, &req.as_bytes());
+        syscall::write(handle, req.as_bytes());
 
         let mut response_state = ResponseState::Headers;
         loop {

src/usr/lisp/primitive.rs

@@ -308,7 +308,7 @@ pub fn lisp_slice(args: &[Exp]) -> Result<Exp, Err> {
     };
     match &args[0] {
         Exp::List(l) => {
-            let l: Vec<Exp> = l.iter().skip(a).cloned().take(b).collect();
+            let l: Vec<Exp> = l.iter().skip(a).take(b).cloned().collect();
             Ok(Exp::List(l))
         }
         Exp::Str(s) => {
@@ -413,7 +413,7 @@ pub fn lisp_file_size(args: &[Exp]) -> Result<Exp, Err> {
     let path = string(&args[0])?;
     match syscall::info(&path) {
         Some(info) => Ok(Exp::Num(Number::from(info.size() as usize))),
-        None => return could_not!("open file"),
+        None => could_not!("open file"),
     }
 }
 

src/usr/socket.rs

@@ -125,7 +125,7 @@ pub fn main(args: &[&str]) -> Result<(), ExitCode> {
             if let Some((h, _)) = syscall::poll(&list) {
                 if h == stdin {
                     let line = io::stdin().read_line().replace("\n", "\r\n");
-                    syscall::write(handle, &line.as_bytes());
+                    syscall::write(handle, line.as_bytes());
                 } else {
                     let mut data = vec![0; buf_len];
                     if let Some(bytes) = syscall::read(handle, &mut data) {