fix(parse_size): Allow dead_code for NotFound variant

Author: naoNao89

src/uucore/src/lib/features/parser/parse_size.rs

@@ -18,6 +18,7 @@ use procfs::{Current, Meminfo};
 enum SystemError {
     IOError,
     ParseError,
+    #[allow(dead_code)]
     NotFound,
 }