fs/squashfs: sqfs_size: remove useless sqfs_closedir()

as sqfs_opendir failed, there's no need to call sqfs_closedir

Signed-off-by: Richard Genoud <richard.genoud@posteo.net>
diff --git a/fs/squashfs/sqfs.c b/fs/squashfs/sqfs.c
index 3b008b5..f4cac3e 100644
--- a/fs/squashfs/sqfs.c
+++ b/fs/squashfs/sqfs.c
@@ -1557,7 +1557,6 @@
 	 */
 	ret = sqfs_opendir(dir, &dirsp);
 	if (ret) {
-		sqfs_closedir(dirsp);
 		ret = -EINVAL;
 		goto free_strings;
 	}