change default value of ldap_tls to 0. It will be detected anyway, but starting with 0 will lead to errors and unconfigurability

apps/user_ldap/lib/configuration.php

@@ -377,7 +377,7 @@ class Configuration {
 			'ldap_groupfilter_groups'           => '',
 			'ldap_display_name'                 => 'displayName',
 			'ldap_group_display_name'           => 'cn',
-			'ldap_tls'                          => 1,
+			'ldap_tls'                          => 0,
 			'ldap_nocase'                       => 0,
 			'ldap_quota_def'                    => '',
 			'ldap_quota_attr'                   => '',

apps/user_ldap/lib/wizard.php

@@ -165,6 +165,9 @@ class Wizard extends LDAPUtility {
 	public function countInBaseDN() {
 		// we don't need to provide a filter in this case
 		$total = $this->countEntries(null, 'objects');
+		if($total === false) {
+			throw new \Exception('invalid results received');
+		}
 		$this->result->addChange('ldap_test_base', $total);
 		return $this->result;
 	}