fix clippy warning

src/io/stderr.rs

@@ -120,7 +120,7 @@ impl Stderr {
     /// # Ok(()) }) }
     /// ```
     pub async fn lock(&self) -> StderrLock<'static> {
-        static STDERR: Lazy<std::io::Stderr> = Lazy::new(|| std::io::stderr());
+        static STDERR: Lazy<std::io::Stderr> = Lazy::new(std::io::stderr);
 
         blocking::spawn(move || StderrLock(STDERR.lock())).await
     }

src/io/stdin.rs

@@ -176,7 +176,7 @@ impl Stdin {
     /// # Ok(()) }) }
     /// ```
     pub async fn lock(&self) -> StdinLock<'static> {
-        static STDIN: Lazy<std::io::Stdin> = Lazy::new(|| std::io::stdin());
+        static STDIN: Lazy<std::io::Stdin> = Lazy::new(std::io::stdin);
 
         blocking::spawn(move || StdinLock(STDIN.lock())).await
     }

src/io/stdout.rs

@@ -120,7 +120,7 @@ impl Stdout {
     /// # Ok(()) }) }
     /// ```
     pub async fn lock(&self) -> StdoutLock<'static> {
-        static STDOUT: Lazy<std::io::Stdout> = Lazy::new(|| std::io::stdout());
+        static STDOUT: Lazy<std::io::Stdout> = Lazy::new(std::io::stdout);
 
         blocking::spawn(move || StdoutLock(STDOUT.lock())).await
     }