Fix a typo in path_set_test.
Fix a typo in path_set_test.

I'd have sworn I fixed this in the orignal CL.

R=rnystrom@google.com
TBR

Review URL: https://codereview.chromium.org//67973003

git-svn-id: c53bd6455474c0a826d309663cf600546f7b0963@30173 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/watcher