🎨 Modify some code

parser/port.go

@@ -1,6 +1,7 @@
 package parser
 
 import (
+	"errors"
 	"strconv"
 )
 
@@ -8,16 +9,10 @@ func ParsePort(portStr string) (uint16, error) {
 	port, err := strconv.Atoi(portStr)
 
 	if err != nil {
-		return 0, &ParseError{
-			Type:    ErrInvalidPort,
-			Message: portStr,
-		}
+		return 0, err
 	}
 	if port < 1 || port > 65535 {
-		return 0, &ParseError{
-			Type:    ErrInvalidPort,
-			Message: portStr,
-		}
+		return 0, errors.New("invaild port range")
 	}
 	return uint16(port), nil
 }