Fix linter issues

bchain/coins/btg/bgoldparser.go

@@ -14,12 +14,16 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0x446d47e1
+	// TestnetMagic is testnet network constant
 	TestnetMagic wire.BitcoinNet = 0x456e48e2
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
+	// TestNetParams are parser parameters for testnet
 	TestNetParams chaincfg.Params
 )
 

bchain/coins/btg/bgoldrpc.go

@@ -13,7 +13,7 @@ type BGoldRPC struct {
 	*btc.BitcoinRPC
 }
 
-// NewBCashRPC returns new BGoldRPC instance.
+// NewBGoldRPC returns new BGoldRPC instance.
 func NewBGoldRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
 	b, err := btc.NewBitcoinRPC(config, pushHandler)
 	if err != nil {

bchain/coins/digibyte/digibyteparser.go

@@ -8,10 +8,12 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0xdab6c3fa
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
 )
 

bchain/coins/fujicoin/fujicoinparser.go

@@ -8,13 +8,18 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0x696a7566
+	// TestnetMagic is testnet network constant
 	TestnetMagic wire.BitcoinNet = 0x66756a69
+	// RegtestMagic is regtest network constant
 	RegtestMagic wire.BitcoinNet = 0x66756a69
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
+	// TestNetParams are parser parameters for testnet
 	TestNetParams chaincfg.Params
 )
 

bchain/coins/liquid/liquidparser.go

@@ -14,10 +14,12 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0xdab5bffa
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
 )
 

bchain/coins/namecoin/namecoinparser.go

@@ -11,10 +11,12 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0xfeb4bef9
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
 )
 

bchain/coins/qtum/qtumparser.go

@@ -6,9 +6,10 @@ import (
 	"blockbook/bchain/coins/utils"
 	"bytes"
 	"encoding/json"
+	"io"
+
 	"github.com/martinboehm/btcd/wire"
 	"github.com/martinboehm/btcutil/chaincfg"
-	"io"
 )
 
 const (
@@ -71,6 +72,9 @@ func GetChainParams(chain string) *chaincfg.Params {
 func parseBlockHeader(r io.Reader) (*wire.BlockHeader, error) {
 	h := &wire.BlockHeader{}
 	err := h.Deserialize(r)
+	if err != nil {
+		return nil, err
+	}
 
 	// hash_state_root 32
 	// hash_utxo_root 32

contrib/scripts/check-and-generate-port-registry.go

@@ -19,6 +19,7 @@ const (
 	outputFile = "docs/ports.md"
 )
 
+// PortInfo contains backend and blockbook ports
 type PortInfo struct {
 	CoinName              string
 	BlockbookInternalPort uint16
@@ -27,8 +28,10 @@ type PortInfo struct {
 	BackendServicePorts   map[string]uint16
 }
 
+// PortInfoSlice is self describing
 type PortInfoSlice []*PortInfo
 
+// Config contains coin configuration
 type Config struct {
 	Coin struct {
 		Name  string `json:"name"`