message: fix string utils import
diff: @@ -22,7 +22,7 @@ import GenericGF from '../../common/reedsolomon/GenericGF';
  import ReedSolomonDecoder from '../../common/reedsolomon/ReedSolomonDecoder';
  import IllegalStateException from '../../IllegalStateException';
  import FormatException from '../../FormatException';
  -import { StringUtils } from '../../..';
  +import StringUtils from '../../common/StringUtils';
  import Integer from '../../util/Integer';
  import { int } from '../../../customTypings';
  