pidfile.New() was opening a file in /proc to determine if the owning process still exists. Use syscall.OpenProcess() on Windows instead. Other OSes may also need to be updated here. Signed-off-by: John Starks <jostarks@microsoft.com> Upstream-commit: 9e5b93565c8a10f4b06d2bcf61305fdfb7128628 Component: engine