pr_Initialize-fix-
20050707
The previous patch to pr_Initialize() opened an opportunity for
afsconf_Check() to be called with a NULL pointer if tdir == 0.
Prevent this occurrance.
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This delta was composed from multiple commits as part of the CVS->Git migration.
The checkin message with each commit was inconsistent.
The following are the additional commit messages.
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fixed one null pointer reference but not the other.
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commit the rest of jeff's fix