Robert Drehmel e76bad968c Correct six return statements which returned zero instead of
an appropriate error number after a failure condition.

In particular, three of the changed statements return ESRCH for a
failed pfind(), and in also three places a non-zero return
from p_cansee() will be passed back,

Also noticed by:	rwatson
2003-07-17 22:44:41 +00:00
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