linter/config: Fix new linter issue and use versionSize const

.golangci.yml

@@ -164,21 +164,12 @@ issues:
     - text: 'shadow: declaration of "err" shadows declaration at'
       linters: [ govet ]
 
-
   exclude-dirs:
     - vendor
     - web/
     - testdata
     - database/models/
 
-  # List of regexps of issue texts to exclude, empty list by default.
-  # But independently from this option we use default exclude patterns,
-  # it can be disabled by `exclude-use-default: false`. To list all
-  # excluded by default patterns execute `golangci-lint run --help`
-  exclude:
-    # The following silences false positives in table tests
-    #   https://github.com/kyoh86/scopelint/issues/4
-     - Using the variable on range scope `ti` in function literal
   include: 
     - EXC0012 # revive: Comment exported (.+) should have comment( \(or a comment on this block\))? or be unexported
     - EXC0014 # revive: Comment on exported (.+) should be of the form "(.+)..."

backtester/btrpc/btrpc.proto

@@ -3,8 +3,8 @@ syntax = "proto3";
 package btrpc;
 
 import "google/api/annotations.proto";
-import "google/protobuf/timestamp.proto";
 import "google/protobuf/duration.proto";
+import "google/protobuf/timestamp.proto";
 
 option go_package = "github.com/thrasher-corp/gocryptotrader/backtester/btrpc";
 

config/config_encryption.go

@@ -184,9 +184,9 @@ func (c *Config) decryptConfigData(d, key []byte) ([]byte, error) {
 		}
 	} else {
 		d = d[len(encryptionVersionPrefix):]
-		switch ver := binary.BigEndian.Uint16(d[:2]); ver {
+		switch ver := binary.BigEndian.Uint16(d[:versionSize]); ver {
 		case 1: // TODO: Add support for version migration
-			d = d[2:]
+			d = d[versionSize:]
 			ciphertext, err = decryptAESGCMCiphertext(d, key)
 			if err != nil {
 				return nil, err

exchanges/bitfinex/bitfinex_websocket.go

@@ -950,11 +950,11 @@ func (b *Bitfinex) handleWSAllTrades(s *subscription.Subscription, respRaw []byt
 	var wsTrades []*wsTrade
 	switch valueType {
 	case jsonparser.String:
-		if t, err := b.handleWSPublicTradeUpdate(respRaw); err != nil {
+		t, err := b.handleWSPublicTradeUpdate(respRaw)
+		if err != nil {
 			return fmt.Errorf("%w `tradesUpdate[2]`: %w", errParsingWSField, err)
-		} else {
-			wsTrades = []*wsTrade{t}
 		}
+		wsTrades = []*wsTrade{t}
 	case jsonparser.Array:
 		if wsTrades, err = b.handleWSPublicTradesSnapshot(v); err != nil {
 			return fmt.Errorf("%w `tradesSnapshot`: %w", errParsingWSField, err)