fix: Prevent crash when refreshing metadata for files without an owner · nextcloud/server@c2e1c9f

apps/admin_audit/lib/Actions/Action.php:42:16: TaintedHtml: Detected tainted HTML (see https://psalm.dev/245)

apps/files_external/lib/Config/ConfigAdapter.php:52:50: TaintedCallable: Detected tainted text (see https://psalm.dev/243)

apps/files_external/lib/Lib/Storage/SFTP.php:384:22: TaintedFile: Detected tainted file handling (see https://psalm.dev/255)

apps/files_sharing/lib/Controller/ShareController.php:430:35: TaintedCookie: Detected tainted cookie (see https://psalm.dev/257)

apps/theming/lib/IconBuilder.php:116:40: TaintedFile: Detected tainted file handling (see https://psalm.dev/255)

apps/theming/lib/IconBuilder.php:214:28: TaintedFile: Detected tainted file handling (see https://psalm.dev/255)

lib/base.php:144:12: TaintedHeader: Detected tainted header (see https://psalm.dev/256)

lib/base.php:226:12: TaintedHeader: Detected tainted header (see https://psalm.dev/256)

lib/private/App/InfoParser.php:38:50: TaintedFile: Detected tainted file handling (see https://psalm.dev/255)

lib/private/AppFramework/Http/Dispatcher.php:208:37: TaintedCallable: Detected tainted text (see https://psalm.dev/243)

Provide feedback