Fix the re-linking issue that was causing a segfault when purging elements from the LDAP cache.

PR 24801

submitted by: [Jess Holle <jessh ptc.com>]
reviewed by: minfrin, bnicholes, clar


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@105343 13f79535-47bb-0310-9956-ffa450edef68