Add is_dir check to getAllApps() function

lib/private/app.php

@@ -779,7 +779,7 @@ class OC_App {
 			if (is_resource($dh)) {
 				while (($file = readdir($dh)) !== false) {
 
-					if ($file[0] != '.' and is_file($apps_dir['path'] . '/' . $file . '/appinfo/info.xml')) {
+					if ($file[0] != '.' and is_dir($apps_dir['path'] . '/' . $file) and is_file($apps_dir['path'] . '/' . $file . '/appinfo/info.xml')) {
 
 						$apps[] = $file;