darkfid: Add TODO note about OsPath.

bin/darkfid/src/main.rs

@@ -294,6 +294,7 @@ async fn realmain(args: Args, ex: Arc<Executor<'_>>) -> Result<()> {
     let wallet = init_wallet(&args.wallet_path, &args.wallet_pass).await?;
 
     // Initialize or open sled database
+    // TODO: Use proper OsPath here, not {}/{}
     let db_path = format!("{}/{}", expand_path(&args.database)?.to_str().unwrap(), args.chain);
     let sled_db = sled::open(&db_path)?;