fix lint warnings

common/buf/readv_reader.go

@@ -99,7 +99,7 @@ func (r *ReadVReader) readMulti() (MultiBuffer, error) {
 		if nBytes <= 0 {
 			break
 		}
-		end := int32(nBytes)
+		end := nBytes
 		if end > Size {
 			end = Size
 		}

common/serial/typed_message.go

@@ -7,7 +7,7 @@ import (
 	"github.com/golang/protobuf/proto"
 )
 
-// ToTypeMessage converts a proto Message into TypedMessage.
+// ToTypedMessage converts a proto Message into TypedMessage.
 func ToTypedMessage(message proto.Message) *TypedMessage {
 	if message == nil {
 		return nil