squashfs: replace ;; with ; and end of fi declaration

There is an extraneous ; after a declaration, remove it.

Link: https://lkml.kernel.org/r/20250708114900.1883130-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: ColinIanKing

fs/squashfs/block.c

@@ -83,7 +83,7 @@ static int squashfs_bio_read_cached(struct bio *fullbio,
 	struct folio *head_to_cache = NULL, *tail_to_cache = NULL;
 	struct block_device *bdev = fullbio->bi_bdev;
 	int start_idx = 0, end_idx = 0;
-	struct folio_iter fi;;
+	struct folio_iter fi;
 	struct bio *bio = NULL;
 	int idx = 0;
 	int err = 0;