fix some warnings

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "microdb"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 description = "A very small in-program database with cache, disk storage, etc."
 license = "MIT"

src/data/result.rs

@@ -82,7 +82,7 @@ where
         }
     }
 
-    fn paths<P: Path>(path: P, db: &MicroDB) -> Result<Vec<String>, io::Error> {
+    fn paths<P: Path>(path: P, _db: &MicroDB) -> Result<Vec<String>, io::Error> {
         Ok(vec![path.sub_path("type"), path.sub_path("data")])
     }
 }

src/data/vec.rs

@@ -71,6 +71,6 @@ where
 
     fn paths<P: Path>(path: P, db: &MicroDB) -> Result<Vec<String>, std::io::Error> {
         let Some(len): Option<u64> = db.get_raw(path.clone())? else { return Ok(vec![]) };
-        Ok((0..len as u64).map(|x| path.sub_path(x)).collect())
+        Ok((0..len).map(|x| path.sub_path(x)).collect())
     }
 }