bugfix: prevent double run functionality didn't work on Windows.
bugfix: prevent double run functionality didn't work on Windows.

paypronl/spork,selenetelenav/spork,chrismdp/spork,jarmo/spork,paypronl/spork,Eric-Guo/spork,selenetelenav/spork,sporkrb/spork,sporkrb/spork,Eric-Guo/spork,jarmo/spork