Replace allow unused directive with _ prefix

1 files changed, 1 insertions, 2 deletions

diff --git a/src/pty.rs b/src/pty.rs
index ec250aa7..b7171885 100644
--- a/src/pty.rs
+++ b/src/pty.rs
@@ -108,8 +108,7 @@ pub fn grantpt(fd: &PtyMaster) -> Result<()> {
 /// let slave_name = unsafe { ptsname(&master_fd) }?;
 ///
 /// // Try to open the slave
-/// # #[allow(unused_variables)]
-/// let slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, Mode::empty())?;
+/// let _slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, Mode::empty())?;
 /// # Ok(())
 /// # }
 /// ```