fix: regression on state sync (#2289)

* fix the path name of leaf snapshot

* rustfmt

* fix: debug format will add "" on the path name

* rustfmt

store/src/leaf_set.rs

@@ -155,7 +155,7 @@ impl LeafSet {
 		let mut cp_bitmap = self.bitmap.clone();
 		cp_bitmap.run_optimize();
 
-		let cp_path = self.path.join(header.hash().to_string());
+		let cp_path = format!("{}.{}", self.path.to_str().unwrap(), header.hash());
 		let mut file = BufWriter::new(File::create(cp_path)?);
 		file.write_all(&cp_bitmap.serialize())?;
 		file.flush()?;

store/src/pmmr.rs

@@ -188,11 +188,12 @@ impl<T: PMMRable> PMMRBackend<T> {
 		// If we received a rewound "snapshot" leaf_set file move it into
 		// place so we use it.
 		if let Some(header) = header {
-			let _leaf_snapshot_path = (data_dir.join(PMMR_LEAF_FILE).to_string_lossy()
-				+ header.hash().to_string().as_ref())
-			.into_owned();
-			let leaf_snapshot_path = PathBuf::from(_leaf_snapshot_path);
-			LeafSet::copy_snapshot(&leaf_set_path, &leaf_snapshot_path)?;
+			let leaf_snapshot_path = format!(
+				"{}.{}",
+				data_dir.join(PMMR_LEAF_FILE).to_str().unwrap(),
+				header.hash()
+			);
+			LeafSet::copy_snapshot(&leaf_set_path, &PathBuf::from(leaf_snapshot_path))?;
 		}
 
 		let leaf_set = LeafSet::open(&leaf_set_path)?;