if sysctl() for getcmdargs returns invalid parameter then we consider it a access denied and return a blank command line (since all other items seem to work so far, no point in raising an exception *just* for the commandline value, so we just ignore it.
if sysctl() for getcmdargs returns invalid parameter then we consider it a
access denied and return a blank command line (since all other items seem to
work so far, no point in raising an exception *just* for the commandline
value, so we just ignore it.

ztop/psutil,ztop/psutil,ztop/psutil,ztop/psutil