fix: skip copying skeleton if the user has 0 quota

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

lib/private/legacy/OC_Util.php

@@ -133,7 +133,7 @@ public static function copySkeleton($userId, \OCP\Files\Folder $userDirectory) {
 			throw new \RuntimeException('username is reserved name: ' . $appdata);
 		}
 
-		if (!empty($skeletonDirectory)) {
+		if (!empty($skeletonDirectory) && $userDirectory->getFreeSpace() !== 0) {
 			$logger->debug('copying skeleton for ' . $userId . ' from ' . $skeletonDirectory . ' to ' . $userDirectory->getFullPath('/'), ['app' => 'files_skeleton']);
 			self::copyr($skeletonDirectory, $userDirectory);
 			// update the file cache