dm thin: fix trailing semicolon in __remap_and_issue_shared_cell

The trailing semicolon is an empty statement that does no operation.
Removing it since it doesn't do anything.
Signed-off-by: Luis de Bethencourt <luisbg@kernel.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

drivers/md/dm-thin.c

@@ -1722,7 +1722,7 @@ static void __remap_and_issue_shared_cell(void *context,
 		    bio_op(bio) == REQ_OP_DISCARD)
 			bio_list_add(&info->defer_bios, bio);
 		else {
-			struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));;
+			struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
 
 			h->shared_read_entry = dm_deferred_entry_inc(info->tc->pool->shared_read_ds);
 			inc_all_io_entry(info->tc->pool, bio);