Small if err cleaning

Signed-off-by: Antonio Murdaca <me@runcom.ninja>

pkg/jsonlog/jsonlog_marshalling.go

@@ -65,8 +65,7 @@ import (
 func (mj *JSONLog) MarshalJSON() ([]byte, error) {
 	var buf bytes.Buffer
 	buf.Grow(1024)
-	err := mj.MarshalJSONBuf(&buf)
-	if err != nil {
+	if err := mj.MarshalJSONBuf(&buf); err != nil {
 		return nil, err
 	}
 	return buf.Bytes(), nil

pkg/mflag/flag.go

@@ -486,8 +486,7 @@ func (f *FlagSet) Set(name, value string) error {
 	if !ok {
 		return fmt.Errorf("no such flag -%v", name)
 	}
-	err := flag.Value.Set(value)
-	if err != nil {
+	if err := flag.Value.Set(value); err != nil {
 		return err
 	}
 	if f.actual == nil {

pkg/system/lstat.go

@@ -12,8 +12,7 @@ import (
 // Throws an error if the file does not exist
 func Lstat(path string) (*Stat_t, error) {
 	s := &syscall.Stat_t{}
-	err := syscall.Lstat(path, s)
-	if err != nil {
+	if err := syscall.Lstat(path, s); err != nil {
 		return nil, err
 	}
 	return fromStatT(s)

pkg/system/stat_linux.go

@@ -20,8 +20,7 @@ func fromStatT(s *syscall.Stat_t) (*Stat_t, error) {
 // Throws an error if the file does not exist
 func Stat(path string) (*Stat_t, error) {
 	s := &syscall.Stat_t{}
-	err := syscall.Stat(path, s)
-	if err != nil {
+	if err := syscall.Stat(path, s); err != nil {
 		return nil, err
 	}
 	return fromStatT(s)

pkg/timeoutconn/timeoutconn.go

@@ -17,8 +17,7 @@ type conn struct {
 
 func (c *conn) Read(b []byte) (int, error) {
 	if c.timeout > 0 {
-		err := c.Conn.SetReadDeadline(time.Now().Add(c.timeout))
-		if err != nil {
+		if err := c.Conn.SetReadDeadline(time.Now().Add(c.timeout)); err != nil {
 			return 0, err
 		}
 	}