Don't try to use the LDAP cache if it has been turned off. Make sure that we

have a "curl" before trying to use it.  If caching has been turned off then the
curl variable will be NULL.  This fixes a problem where LDAP caching would
fault when caching was disabled.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@98785 13f79535-47bb-0310-9956-ffa450edef68