uucore: remove unnecessary .as_fd()

src/uucore/src/lib/features/fs.rs

@@ -789,7 +789,7 @@ pub fn is_stdin_directory(stdin: &Stdin) -> bool {
     #[cfg(unix)]
     {
         use mode::{S_IFDIR, S_IFMT};
-        let mode = rustix::fs::fstat(stdin.as_fd()).unwrap().st_mode as u32;
+        let mode = rustix::fs::fstat(stdin).unwrap().st_mode as u32;
         // We use the S_IFMT mask ala S_ISDIR() to avoid mistaking
         // sockets for directories.
         mode & S_IFMT == S_IFDIR

src/uucore/src/lib/features/signals.rs

@@ -662,7 +662,7 @@ pub fn ensure_stdout_not_broken() -> std::io::Result<bool> {
     let out = stdout();
 
     // First, check that stdout is a fifo and return true if it's not the case
-    let stat = fstat(out.as_fd())?;
+    let stat = fstat(&out)?;
     if !SFlag::from_bits_truncate(stat.st_mode).contains(SFlag::S_IFIFO) {
         return Ok(true);
     }