qcow/qcow2: Use DIV_ROUND_UP

Replace (((n) + (d) - 1) /(d)) by DIV_ROUND_UP(n,d).

This patch is the result of coccinelle script
scripts/coccinelle/round.cocci

CC: qemu-block@nongnu.org
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/block/qcow.c b/block/qcow.c
index cb4bf02..c5cf813 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -868,8 +868,8 @@
     }
 
     tmp = g_malloc0(BDRV_SECTOR_SIZE);
-    for (i = 0; i < ((sizeof(uint64_t)*l1_size + BDRV_SECTOR_SIZE - 1)/
-        BDRV_SECTOR_SIZE); i++) {
+    for (i = 0; i < DIV_ROUND_UP(sizeof(uint64_t) * l1_size, BDRV_SECTOR_SIZE);
+         i++) {
         ret = blk_pwrite(qcow_blk, header_size + BDRV_SECTOR_SIZE * i,
                          tmp, BDRV_SECTOR_SIZE, 0);
         if (ret != BDRV_SECTOR_SIZE) {