style, lifetime annotations

Author: hz2

src/uucore/src/lib/features/checksum.rs

@@ -701,7 +701,7 @@ fn get_filename_for_output(filename: &OsStr, input_is_stdin: bool) -> String {
 fn get_expected_digest_as_hex_string(
     line_info: &LineInfo,
     len_hint: Option<usize>,
-) -> Option<Cow<str>> {
+) -> Option<Cow<'_, str>> {
     let ck = &line_info.checksum;
 
     let against_hint = |len| len_hint.is_none_or(|l| l == len);
@@ -989,7 +989,7 @@ fn process_checksum_line(
         process_non_algo_based_line(i, &line_info, cli_algo, cli_algo_length, opts)
     } else {
         // We have no clue of what algorithm to use
-        return Err(LineCheckError::ImproperlyFormatted);
+        Err(LineCheckError::ImproperlyFormatted)
     }
 }
 

src/uucore/src/lib/lib.rs

@@ -344,7 +344,7 @@ pub fn os_str_as_bytes(os_string: &OsStr) -> Result<&[u8], NonUtf8OsStrError> {
 ///
 /// This is always lossless on unix platforms,
 /// and wraps [`OsStr::to_string_lossy`] on non-unix platforms.
-pub fn os_str_as_bytes_lossy(os_string: &OsStr) -> Cow<[u8]> {
+pub fn os_str_as_bytes_lossy(os_string: &OsStr) -> Cow<'_, [u8]> {
     #[cfg(unix)]
     return Cow::from(os_string.as_bytes());