internal: fix staticcheck warnings (ethereum#20380)

internal/cmdtest/test_cmd.go

@@ -127,12 +127,12 @@ func (tt *TestCmd) matchExactOutput(want []byte) error {
 		// Find the mismatch position.
 		for i := 0; i < n; i++ {
 			if want[i] != buf[i] {
-				return fmt.Errorf("Output mismatch at ◊:\n---------------- (stdout text)\n%s◊%s\n---------------- (expected text)\n%s",
+				return fmt.Errorf("output mismatch at ◊:\n---------------- (stdout text)\n%s◊%s\n---------------- (expected text)\n%s",
 					buf[:i], buf[i:n], want)
 			}
 		}
 		if n < len(want) {
-			return fmt.Errorf("Not enough output, got until ◊:\n---------------- (stdout text)\n%s\n---------------- (expected text)\n%s◊%s",
+			return fmt.Errorf("not enough output, got until ◊:\n---------------- (stdout text)\n%s\n---------------- (expected text)\n%s◊%s",
 				buf, want[:n], want[n:])
 		}
 	}

internal/ethapi/api.go

@@ -486,7 +486,7 @@ func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (s
 	case *scwallet.Wallet:
 		return mnemonic, wallet.Initialize(seed)
 	default:
-		return "", fmt.Errorf("Specified wallet does not support initialization")
+		return "", fmt.Errorf("specified wallet does not support initialization")
 	}
 }
 
@@ -501,7 +501,7 @@ func (s *PrivateAccountAPI) Unpair(ctx context.Context, url string, pin string)
 	case *scwallet.Wallet:
 		return wallet.Unpair([]byte(pin))
 	default:
-		return fmt.Errorf("Specified wallet does not support pairing")
+		return fmt.Errorf("specified wallet does not support pairing")
 	}
 }
 
@@ -1389,7 +1389,7 @@ func (args *SendTxArgs) setDefaults(ctx context.Context, b Backend) error {
 		args.Nonce = (*hexutil.Uint64)(&nonce)
 	}
 	if args.Data != nil && args.Input != nil && !bytes.Equal(*args.Data, *args.Input) {
-		return errors.New(`Both "data" and "input" are set and not equal. Please use "input" to pass transaction call data.`)
+		return errors.New(`both "data" and "input" are set and not equal. Please use "input" to pass transaction call data`)
 	}
 	if args.To == nil {
 		// Contract creation
@@ -1645,7 +1645,7 @@ func (s *PublicTransactionPoolAPI) Resend(ctx context.Context, sendArgs SendTxAr
 		}
 	}
 
-	return common.Hash{}, fmt.Errorf("Transaction %#x not found", matchTx.Hash())
+	return common.Hash{}, fmt.Errorf("transaction %#x not found", matchTx.Hash())
 }
 
 // PublicDebugAPI is the collection of Ethereum APIs exposed over the public

internal/jsre/deps/bindata.go

@@ -1,8 +1,7 @@
-// Code generated by go-bindata. DO NOT EDIT.
+// Package deps Code generated by go-bindata. (@generated) DO NOT EDIT.
 // sources:
 // bignumber.js
 // web3.js
-
 package deps
 
 import (
@@ -20,15 +19,15 @@ import (
 func bindataRead(data []byte, name string) ([]byte, error) {
 	gz, err := gzip.NewReader(bytes.NewBuffer(data))
 	if err != nil {
-		return nil, fmt.Errorf("Read %q: %v", name, err)
+		return nil, fmt.Errorf("read %q: %v", name, err)
 	}
 
 	var buf bytes.Buffer
 	_, err = io.Copy(&buf, gz)
 	clErr := gz.Close()
 
 	if err != nil {
-		return nil, fmt.Errorf("Read %q: %v", name, err)
+		return nil, fmt.Errorf("read %q: %v", name, err)
 	}
 	if clErr != nil {
 		return nil, err
@@ -49,21 +48,32 @@ type bindataFileInfo struct {
 	modTime time.Time
 }
 
+// Name return file name
 func (fi bindataFileInfo) Name() string {
 	return fi.name
 }
+
+// Size return file size
 func (fi bindataFileInfo) Size() int64 {
 	return fi.size
 }
+
+// Mode return file mode
 func (fi bindataFileInfo) Mode() os.FileMode {
 	return fi.mode
 }
+
+// ModTime return file modify time
 func (fi bindataFileInfo) ModTime() time.Time {
 	return fi.modTime
 }
+
+// IsDir return file whether a directory
 func (fi bindataFileInfo) IsDir() bool {
-	return false
+	return fi.mode&os.ModeDir != 0
 }
+
+// Sys return file is sys mode
 func (fi bindataFileInfo) Sys() interface{} {
 	return nil
 }
@@ -161,8 +171,7 @@ func AssetNames() []string {
 // _bindata is a table, holding each asset generator, mapped to its name.
 var _bindata = map[string]func() (*asset, error){
 	"bignumber.js": bignumberJs,
-
-	"web3.js": web3Js,
+	"web3.js":      web3Js,
 }
 
 // AssetDir returns the file names below a certain
@@ -228,7 +237,11 @@ func RestoreAsset(dir, name string) error {
 	if err != nil {
 		return err
 	}
-	return os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
+	err = os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
+	if err != nil {
+		return err
+	}
+	return nil
 }
 
 // RestoreAssets restores an asset under the given directory recursively