tools.ps.windows: If we can't read the process command-line args, just ignore the error.
tools.ps.windows: If we can't read the process command-line args, just
ignore the error.

Fixes #1788.

mrjbq7/factor,bpollack/factor,factor/factor,bpollack/factor,bpollack/factor,tgunr/factor,bpollack/factor,AlexIljin/factor,mrjbq7/factor,mrjbq7/factor,AlexIljin/factor,factor/factor,factor/factor,AlexIljin/factor,AlexIljin/factor,bpollack/factor,mrjbq7/factor,tgunr/factor,AlexIljin/factor,factor/factor,tgunr/factor,bpollack/factor,AlexIljin/factor,mrjbq7/factor,mrjbq7/factor,factor/factor,factor/factor,AlexIljin/factor,tgunr/factor,tgunr/factor,tgunr/factor,bpollack/factor