fixing boolean handling

apps/files_external/lib/irods.php

@@ -32,7 +32,7 @@ class iRODS extends \OC\Files\Storage\StreamWrapper{
 			$this->port = isset($params['port']) ? $params['port'] : 1247;
 			$this->user = isset($params['user']) ? $params['user'] : '';
 			$this->password = isset($params['password']) ? $params['password'] : '';
-			$this->use_logon_credentials = $params['use_logon_credentials'];
+			$this->use_logon_credentials = $params['use_logon_credentials'] === 'true' ? true : false;
 			$this->zone = $params['zone'];
 			$this->auth_mode = isset($params['auth_mode']) ? $params['auth_mode'] : '';
 
@@ -42,7 +42,7 @@ class iRODS extends \OC\Files\Storage\StreamWrapper{
 			}
 
 			// take user and password from the session
-			if ($this->use_logon_credentials === "true" && \OC::$session->exists('irods-credentials'))
+			if ($this->use_logon_credentials && \OC::$session->exists('irods-credentials'))
 			{
 				$params = \OC::$session->get('irods-credentials');
 				$this->user = $params['uid'];