incorrect use of pidfile(3)

[Dag-Erling Smørgrav]

After discussing this with pjd@ on IRC, I arrived at the attached patch,
which increases the length of time pidfile_open() itself waits (I hadn't
noticed that it already looped) and sets *pidptr to -1 if it fails to read
a pid.

DES
-- 
Dag-Erling Smørgrav - des at des.no

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