cut: remove unnecessary return type

src/uu/cut/src/cut.rs

@@ -337,7 +337,7 @@ fn cut_fields<R: Read>(reader: R, ranges: &[Range], opts: &FieldOptions) -> URes
     Ok(())
 }
 
-fn cut_files(mut filenames: Vec<String>, mode: &Mode) -> UResult<()> {
+fn cut_files(mut filenames: Vec<String>, mode: &Mode) {
     let mut stdin_read = false;
 
     if filenames.is_empty() {
@@ -377,8 +377,6 @@ fn cut_files(mut filenames: Vec<String>, mode: &Mode) -> UResult<()> {
                 }));
         }
     }
-
-    Ok(())
 }
 
 mod options {
@@ -526,7 +524,10 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         .collect();
 
     match mode_parse {
-        Ok(mode) => cut_files(files, &mode),
+        Ok(mode) => {
+            cut_files(files, &mode);
+            Ok(())
+        }
         Err(e) => Err(USimpleError::new(1, e)),
     }
 }