dm vdo block-map: Remove stray semicolon

Remove the unnecessary semicolon at the end of the for statement.
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

drivers/md/dm-vdo/block-map.c

@@ -2705,7 +2705,7 @@ void vdo_traverse_forest(struct block_map *map, vdo_entry_callback_fn callback,
 
 		cursor->waiter.callback = launch_cursor;
 		acquire_vio_from_pool(cursors->pool, &cursor->waiter);
-	};
+	}
 }
 
 /**