(ITS#9152) Configuring autoca before database exists crashes slapd

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: HEAD
OS: N/A
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (47.208.143.26)


If you configure autoca via cn=config when the underlying DB does not yet exist,
slapd will crash.

i.e., I added this entry to my cn=config db:

dn: olcOverlay=autoca,olcDatabase={1}mdb,cn=config
changetype: add
objectClass: olcOverlayConfig
objectClass: olcACAConfig
olcOverlay: autoca
olcACAlocalDN: cn=anvil4.rb.symas.net,ou=Servers,dc=rb,dc=symas,dc=net


while the mdb database was not yet populated.