fix typo and comment

apps/user_ldap/lib/connection.php

@@ -56,7 +56,7 @@ class Connection extends LDAPUtility {
 	//cache handler
 	protected $cache;
 
-	//settings handler
+	/** @var Configuration settings handler **/
 	protected $configuration;
 
 	protected $doNotValidate = false;
@@ -169,7 +169,7 @@ class Connection extends LDAPUtility {
 			$this->establishConnection();
 		}
 		if(is_null($this->ldapConnectionRes)) {
-			\OCP\Util::writeLog('user_ldap', 'No LDAP Connection to server ' . $this->connection->ldapHost, \OCP\Util::ERROR);
+			\OCP\Util::writeLog('user_ldap', 'No LDAP Connection to server ' . $this->configuration->ldapHost, \OCP\Util::ERROR);
 			throw new ServerNotAvailableException('Connection to LDAP server could not be established');
 		}
 		return $this->ldapConnectionRes;

apps/user_ldap/lib/user/manager.php

@@ -168,7 +168,7 @@ class Manager {
 
 	/**
 	 * @brief returns a User object by it's DN or ownCloud username
-	 * @param string the username of the user
+	 * @param string the DN or username of the user
 	 * @return \OCA\user_ldap\lib\user\User|\OCA\user_ldap\lib\user\OfflineUser|null
 	 * @throws \Exception when connection could not be established
 	 */