Make Clippy happy

src/steps/generic.rs

@@ -100,7 +100,7 @@ pub fn run_composer_update(base_dirs: &BaseDirs, run_type: RunType) -> Result<()
         .check_output()
         .map_err(|_| Error::from(ErrorKind::SkipStep))
         .map(PathBuf::from)
-        .and_then(|p| p.require())?;
+        .and_then(PathExt::require)?;
 
     if !composer_home.is_descendant_of(base_dirs.home_dir()) {
         Err(ErrorKind::SkipStep)?;

src/steps/os/linux.rs

@@ -96,7 +96,7 @@ impl Distribution {
 pub fn show_pacnew() {
     let mut iter = WalkDir::new("/etc")
         .into_iter()
-        .filter_map(|e| e.ok())
+        .filter_map(Result::ok)
         .filter(|f| {
             f.path()
                 .extension()