qcow2: Use L1E_SIZE in qcow2_write_l1_entry()

We overlooked these in 02b1ecfa100e7ecc2306560cd27a4a2622bfeb04

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200928162333.14998-1-berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block/qcow2-cluster.c

@@ -240,14 +240,14 @@ int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index)
     }
 
     ret = qcow2_pre_write_overlap_check(bs, QCOW2_OL_ACTIVE_L1,
-            s->l1_table_offset + 8 * l1_start_index, bufsize, false);
+            s->l1_table_offset + L1E_SIZE * l1_start_index, bufsize, false);
     if (ret < 0) {
         return ret;
     }
 
     BLKDBG_EVENT(bs->file, BLKDBG_L1_UPDATE);
     ret = bdrv_pwrite_sync(bs->file,
-                           s->l1_table_offset + 8 * l1_start_index,
+                           s->l1_table_offset + L1E_SIZE * l1_start_index,
                            buf, bufsize);
     if (ret < 0) {
         return ret;