Merge pull request #7822 from nextcloud/check-if-realpath-returns-false

Check if realpath() returns false

Author: rullzer

lib/private/DB/MigrationService.php

@@ -186,7 +186,7 @@ public function getAvailableVersions() {
 
 	protected function findMigrations() {
 		$directory = realpath($this->migrationsPath);
-		if (!file_exists($directory) || !is_dir($directory)) {
+		if ($directory === false || !file_exists($directory) || !is_dir($directory)) {
 			return [];
 		}