[PATCH] fix bug where sys::Wait could wait on wrong pid

[Daniel Reynaud]

Ping.

On Sep 5, 2014, at 10:15 AM, Daniel Reynaud <dreynaud at apple.com> wrote:

> I see no reason to set ChildPid to -1 when WaitUntilTerminates is true. 
> 
> If there was some other unwaited-for child process that terminates before PI.Pid, its pid would be returned instead of PI.Pid so the function would return "Error waiting for child process", even though errno is 0.
> 
> By making we wait on the right process, this works as expected.
> 
> 
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