Ticket 47740 - Crash caused by changes to certmap.c
Bug Description: dncomps & filtercomps could be incorrectly freed,
which lead to a crash.
Fix Description: Allocate "" for dncomps & filtercomps, instead of
setting it on the stack.
https://fedorahosted.org/389/ticket/47740
Reviewed by: rmeggins(Thanks!)
(cherry picked from commit 33b98f1c901f1441dd1f709e244735fa339a287e)