fix linter errors

cmd/statusd/main.go

@@ -95,9 +95,7 @@ func main() {
 	)
 	if err != nil {
 		printUsage()
-		if err != nil {
-			logger.Error(err.Error())
-		}
+		logger.Error(err.Error())
 		os.Exit(1)
 	}
 

extkeys/hdkey_test.go

@@ -617,7 +617,7 @@ func TestChildForPurpose(t *testing.T) {
 
 	// Check that the key generated by ChildForPurpose with KeyPurposeChat is different from the BIP44
 	if walletChild.String() == chatChild.String() {
-		t.Errorf("wrong chat key. expected to be diferrent from the wallet key")
+		t.Errorf("wrong chat key. expected to be different from the wallet key")
 	}
 }
 

services/rpcfilters/api_test.go

@@ -94,8 +94,8 @@ func TestGetFilterLogs(t *testing.T) {
 	logs, err := api.GetFilterLogs(context.TODO(), id)
 	require.NoError(t, err)
 	require.Empty(t, logs)
-	require.Len(t, tracker.criterias, 1)
-	rst, err := hexutil.DecodeBig(tracker.criterias[0]["fromBlock"].(string))
+	require.Len(t, tracker.criteria, 1)
+	rst, err := hexutil.DecodeBig(tracker.criteria[0]["fromBlock"].(string))
 	require.NoError(t, err)
 	require.Equal(t, block, rst)
 }

services/rpcfilters/latest_logs_test.go

@@ -17,10 +17,10 @@ import (
 )
 
 type callTracker struct {
-	mu        sync.Mutex
-	calls     int
-	reply     [][]types.Log
-	criterias []map[string]interface{}
+	mu       sync.Mutex
+	calls    int
+	reply    [][]types.Log
+	criteria []map[string]interface{}
 }
 
 func (c *callTracker) CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error {
@@ -31,7 +31,7 @@ func (c *callTracker) CallContext(ctx context.Context, result interface{}, metho
 		return errors.New("unexpected length of args")
 	}
 	crit := args[0].(map[string]interface{})
-	c.criterias = append(c.criterias, crit)
+	c.criteria = append(c.criteria, crit)
 	select {
 	case <-ctx.Done():
 		return errors.New("context canceled")
@@ -73,7 +73,7 @@ func runLogsFetcherTest(t *testing.T, f *logsFilter, replies [][]types.Log, quer
 		}
 	}()
 	wg.Wait()
-	require.Len(t, c.criterias, queries)
+	require.Len(t, c.criteria, queries)
 	return &c
 }
 
@@ -90,8 +90,8 @@ func TestLogsFetcherAdjusted(t *testing.T) {
 		{BlockNumber: 11}, {BlockNumber: 12},
 	}
 	c := runLogsFetcherTest(t, f, [][]types.Log{logs}, 2)
-	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
-	require.Equal(t, c.criterias[1]["fromBlock"], "latest")
+	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criteria[0]["fromBlock"])
+	require.Equal(t, c.criteria[1]["fromBlock"], "latest")
 }
 
 func TestAdjustedDueToReorg(t *testing.T) {
@@ -110,9 +110,9 @@ func TestAdjustedDueToReorg(t *testing.T) {
 		{BlockNumber: 12, BlockHash: common.Hash{2, 2}},
 	}
 	c := runLogsFetcherTest(t, f, [][]types.Log{logs, reorg}, 3)
-	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
-	require.Equal(t, "latest", c.criterias[1]["fromBlock"])
-	require.Equal(t, hexutil.EncodeBig(big.NewInt(11)), c.criterias[2]["fromBlock"])
+	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criteria[0]["fromBlock"])
+	require.Equal(t, "latest", c.criteria[1]["fromBlock"])
+	require.Equal(t, hexutil.EncodeBig(big.NewInt(11)), c.criteria[2]["fromBlock"])
 }
 
 func TestLogsFetcherCanceledContext(t *testing.T) {
@@ -127,6 +127,6 @@ func TestLogsFetcherCanceledContext(t *testing.T) {
 	}
 	cancel()
 	c := runLogsFetcherTest(t, f, [][]types.Log{make([]types.Log, 2)}, 2)
-	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[0]["fromBlock"])
-	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criterias[1]["fromBlock"])
+	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criteria[0]["fromBlock"])
+	require.Equal(t, hexutil.EncodeBig(big.NewInt(10)), c.criteria[1]["fromBlock"])
 }

services/shhext/api.go

@@ -650,9 +650,6 @@ func (api *PublicAPI) SendPairingMessage(ctx context.Context, msg chat.SendDirec
 	}
 
 	msg.PubKey = crypto.FromECDSAPub(&privateKey.PublicKey)
-	if err != nil {
-		return nil, err
-	}
 
 	protocolMessage, err := api.service.protocol.BuildDHMessage(privateKey, &privateKey.PublicKey, msg.Payload)
 	if err != nil {

services/shhext/chat/crypto/crypto.go

@@ -8,6 +8,7 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
+
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
@@ -103,11 +104,7 @@ func EncryptSymmetric(key, plaintext []byte) ([]byte, error) {
 		return nil, err
 	}
 
-	encrypted, err := aesgcm.Seal(nil, salt, plaintext, nil), nil
-	if err != nil {
-		return nil, err
-	}
-
+	encrypted := aesgcm.Seal(nil, salt, plaintext, nil)
 	return append(encrypted, salt...), nil
 }
 

services/shhext/chat/crypto/crypto_test.go

@@ -115,7 +115,7 @@ func TestSymmetricEncryption(t *testing.T) {
 		t,
 		32,
 		len(cyphertext1),
-		"Cyphertext with the correct lenght should be generated")
+		"Cyphertext with the correct length should be generated")
 
 	require.NotEqualf(
 		t,

services/shhext/mailservers/connmanager.go

@@ -122,7 +122,7 @@ func (ps *ConnectionManager) Start() {
 						continue
 					}
 					failuresPerServer[ev.Peer]++
-					log.Debug("request to a mail server expired, disconncet a peer", "address", ev.Peer)
+					log.Debug("request to a mail server expired, disconnect a peer", "address", ev.Peer)
 					if failuresPerServer[ev.Peer] >= ps.maxFailures {
 						state.nodeDisconnected(ev.Peer)
 					}

services/shhext/service.go

@@ -30,7 +30,7 @@ const (
 	defaultTimeoutWaitAdded = 5 * time.Second
 )
 
-var errProtocolNotInitialized = errors.New("procotol is not initialized")
+var errProtocolNotInitialized = errors.New("protocol is not initialized")
 
 // EnvelopeEventsHandler used for two different event types.
 type EnvelopeEventsHandler interface {