[Qemu-trivial] [PATCH 1/2] hw/virtio-net: use existing macros to implement endof

[Jesse Larrew]

Clarify the definition of endof() by using the offsetof() and sizeof()
macros to handle the pointer magic.

Signed-off-by: Jesse Larrew <address@hidden>
---
 hw/virtio-net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 8f521b3..663f33c 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -81,7 +81,7 @@ typedef struct VirtIONet
  * 'container'.
  */
 #define endof(container, field) \
-    ((intptr_t)(&(((container *)0)->field)+1))
+    (offsetof(container, field) + sizeof(((container *)0)->field))
 
 typedef struct VirtIOFeature {
     uint32_t flags;
-- 
1.7.11.7