Fix linter errors #2

libbeat/reader/readfile/line.go

@@ -19,6 +19,7 @@ package readfile
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 
@@ -93,7 +94,7 @@ func (r *LineReader) Next() (b []byte, n int, err error) {
 		// read next 'potential' line from input buffer/reader
 		err := r.advance()
 		if err != nil {
-			if (err == io.EOF) && r.collectOnEOF {
+			if errors.Is(err, io.EOF) && r.collectOnEOF {
 				// Found EOF and collectOnEOF is true
 				// -> decode input sequence into outBuffer
 				// let's take whole buffer len without len(nl) if it ends with it
@@ -183,7 +184,7 @@ func (r *LineReader) advance() error {
 		// Try to read more bytes into buffer
 		n, err := r.reader.Read(r.tempBuffer)
 
-		if (err == io.EOF) && n > 0 {
+		if errors.Is(err, io.EOF) && n > 0 {
 			// Continue processing the returned bytes. The next call will yield EOF with 0 bytes.
 			err = nil
 		}

libbeat/reader/readfile/line_test.go

@@ -23,6 +23,7 @@ package readfile
 import (
 	"bytes"
 	"encoding/hex"
+	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -119,7 +120,7 @@ func TestReaderEncodings(t *testing.T) {
 			bytes, sz, err := reader.Next()
 			if sz > 0 {
 				offset := len(bytes)
-				if offset > 0 && (!test.collectOnEOF || !(err == io.EOF) || test.withEOL) {
+				if offset > 0 && (!test.collectOnEOF || !errors.Is(err, io.EOF) || test.withEOL) {
 					offset -= len(nl)
 				}
 				readLines = append(readLines, string(bytes[:offset]))
@@ -434,7 +435,7 @@ func TestMaxBytesLimit(t *testing.T) {
 	for i := 0; ; i++ {
 		b, n, err := reader.Next()
 		if err != nil {
-			if err == io.EOF {
+			if errors.Is(err, io.EOF) {
 				readLen += n
 				break
 			} else {