(ITS#4341) Old style configuration of dynlist segfaults

[diggyk@diggyk.com]

Full_Name: Digant C Kasundra
Version: 2.3.17
OS: RHEL 4 AS
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (129.107.240.248)


Use of the old style of dynlist configuration:

overlay dynlist
dynlist-oc blah
dynlist-ad yada

... will cause slapd and slaptest to segfault during attr_merge_normalize.

Sidenote, http://www.openldap.org/faq/data/cache/1209.html should be cleaned up
to remove olders configuration notes for dynlist.