Fix seg fault in fork_parent

[Arto Huusko]

This patch fixes null deref in fork_parent() when pinfo::init fails.

I'm sorry the patch is not against CVS, but I am unable to use CVS from
where I work. If this is not acceptable, please tell me, and I can try
to do this from home.

In any case, the patch is against fork.cc rev 1.156.


2005-07-29  Arto Huusko  <arto.huusko@wmdata.fi>

	* fork.cc (fork_parent): Fix null deref if creation of pinfo
	of the child fails.

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