syncinfo_t.tlimit should be struct timeval * (ITS#2592)

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B Furuseth
Version: HEAD
OS: 
URL: 
Submission from: (NULL) (129.240.186.42)
Submitted by: hallvard


slapd.conf declares struct syncinfo_s.tlimit as int.
However, it is assigned a NULL (pointer) in config.c, and
passed to ldap_search_ext() where it expects a struct timeval*.

BTW, if it is to be a pointer, maybe it should be free()ed
when the syncinfo_t is destroyed.