Trac Ticket 396 - Account Usability Control Not Working [Bug 835238]
https://fedorahosted.org/389/ticket/396
Fix Description: Commit 003812911f56619f0db58ba627037644fb0f68fb
broke the feature. This patch is backing off the change so that
get_entry accepts NULL pblock, which is necessary for the
Account Usability plugin.