lnd: WalletBalance checks on account basis

rpcserver.go

@@ -3194,7 +3194,7 @@ func (r *rpcServer) WalletBalance(ctx context.Context,
 
 	// Retrieve all existing wallet accounts. We'll compute the confirmed
 	// and unconfirmed balance for each and tally them up.
-	accounts, err := r.server.cc.Wallet.ListAccounts("", nil)
+	accounts, err := r.server.cc.Wallet.ListAccounts(in.Account, nil)
 	if err != nil {
 		return nil, err
 	}