Returns the virtual address (SPTR) of a process's process information block (PIB).
pib (pin)
pib:sptr (pin:u16)
The process identification number (PIN) for which the address of the PIB is to be returned.
$nmdebug > wl pib(8) $c3583a20
If the PIN does not exist, the function result is undefined and an error status is set.
