[clippy] fix clippy issues

crates/lanspread-server/src/req.rs

@@ -171,10 +171,5 @@ fn get_relative_path(base: &Path, deep_path: &Path) -> std::io::Result<PathBuf>
     full_canonical
         .strip_prefix(&base_canonical)
         .map(std::path::Path::to_path_buf)
-        .map_err(|_| {
-            std::io::Error::new(
-                std::io::ErrorKind::Other,
-                "Path is not within base directory",
-            )
-        })
+        .map_err(|_| std::io::Error::other("Path is not within base directory"))
 }