Fix formatting and linting issues

bchain/coins/monetaryunit/monetaryunitrpc.go

@@ -58,7 +58,7 @@ func (b *MonetaryUnitRPC) Initialize() error {
 	return nil
 }
 
-// Get Block
+// GetBlock gets block from backend
 func (b *MonetaryUnitRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
 
 	if height == 0 {
@@ -91,6 +91,9 @@ func (b *MonetaryUnitRPC) GetBlock(hash string, height uint32) (*bchain.Block, e
 	req.Params.BlockHash = hash
 	req.Params.Verbosity = 1
 	err = b.Call(&req, &res)
+	if err != nil {
+		return nil, err
+	}
 
 	txs := make([]bchain.Tx, 0, len(res.Result.Txids))
 	for _, txid := range res.Result.Txids {

db/rocksdb.go

@@ -468,9 +468,8 @@ func (ab *AddrBalance) markUtxoAsSpent(btxID []byte, vout int32) {
 						// mark utxo as spent by setting vout=-1
 						utxo.Vout = -1
 						return
-					} else {
-						break
 					}
+					break
 				}
 			}
 		}

db/rocksdb_test.go

@@ -665,7 +665,7 @@ func TestRocksDB_Index_BitcoinType(t *testing.T) {
 		SentSat:    *dbtestdata.SatB1T2A5,
 		BalanceSat: *dbtestdata.SatB2T3A5,
 		Utxos: []Utxo{
-			Utxo{
+			{
 				BtxID:    hexToBytes(dbtestdata.TxidB2T3),
 				Vout:     0,
 				Height:   225494,