go.exp/fsnotify: fix test nit
go.exp/fsnotify: fix test nit

R=golang-dev, dave, minux.ma
CC=golang-dev
https://codereview.appspot.com/8193044

Committer: Dave Cheney <bfcdf3e6ca6cef45543bfbb57509c92aec9a39fb@cheney.net>

d0f/go-zh.exp,webfd/go-zh.exp,bryanxu/go-zh.exp