Actually use the compare_cache_size value that is being set by...

Actually use the compare_cache_size value that is being set by LDAPOpCacheEntries.  The actual cache_size was previously defaulting to the value of search _cache_size set by LDAPCacheEntries.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@159542 13f79535-47bb-0310-9956-ffa450edef68