[Qemu-block] [PATCH] xen-disk: use g_malloc0 to fix build

[Olaf Hering]

g_malloc0_n is available since glib-2.24. To allow build with older glib
versions use the generic g_malloc0, which is already used in many other
places in the code.

Fixes commit 3284fad728 ("xen-disk: add support for multi-page shared rings")

Signed-off-by: Olaf Hering <address@hidden>
---
 hw/block/xen_disk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c
index d42ed7070d..71deec17b0 100644
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@@ -1232,7 +1232,7 @@ static int blk_connect(struct XenDevice *xendev)
         return -1;
     }
 
-    domids = g_malloc0_n(blkdev->nr_ring_ref, sizeof(uint32_t));
+    domids = g_malloc0(blkdev->nr_ring_ref * sizeof(uint32_t));
     for (i = 0; i < blkdev->nr_ring_ref; i++) {
         domids[i] = blkdev->xendev.dom;
     }