readlink /etc/mtab > /dev/full panics (#10525)

src/uu/readlink/src/readlink.rs

@@ -185,7 +185,7 @@ pub fn uu_app() -> Command {
 fn show(path: &Path, line_ending: Option<LineEnding>) -> std::io::Result<()> {
     uucore::display::print_verbatim(path)?;
     if let Some(line_ending) = line_ending {
-        print!("{line_ending}");
+        write!(stdout(), "{line_ending}")?;
     }
     stdout().flush()
 }