Fix a problem with invalid auth error detection for LDAP client SDKs that...

Fix a problem with invalid auth error detection for LDAP client SDKs that don't support LDAP_SECURITY_ERROR macro. PR#39529

Submitted by: [Ray Price <dohrayme yahoo.com>], [Josh Fenlason <jfenlason ptc.com>]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@411306 13f79535-47bb-0310-9956-ffa450edef68