Description: Regression was added by this commit:
  commit 1a119125856006543aae0520b5800a8b52c3b049
  Ticket #48228 - wrong password check if passwordInHistory is decreased.
Compare function pw_history_cmp used in qsort did not check the correct
address for the timestamp string, which made qsort return the password
history in the wrong order.

https://fedorahosted.org/389/ticket/48228

Reviewed by rmeggins@redhat.com (Thank you, Rich!)

(cherry picked from commit 391acfcf9a67b9b27ebbd98d1dfe30ef54a027c4)
(cherry picked from commit 096b386663c949136095def77a7fb12eee64e542)