Fix a synchronous event bug in futureStream.

R=rnystrom@google.com
TBR

Review URL: https://codereview.chromium.org//68713004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/watcher@30182 260f80e4-7a28-3924-810f-c04153c831b5
1 file changed
tree: 11dd6d7846aa1ddde8ce3fc960c9e122befdb92b
  1. pkgs/