STABLE14-pr_Initialize-fix-20050707

STABLE14-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

(cherry picked from commit 46ff986a42e3cce761ad5830e9e2792d67d5a156)