Fix minor path handling issue in path package.

BUG=

Review URL: https://codereview.chromium.org//11876012

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/path@17006 260f80e4-7a28-3924-810f-c04153c831b5
2 files changed
tree: fff5bcf02c4368e66b3fe891bdba49c5269f89be
  1. lib/
  2. test/
  3. pubspec.yaml