[libvirt] [PATCH] macvtap: fix a typo

[Stefan Berger]

Below patch fixes the following coverity findings

Error: OVERRUN_STATIC:
/libvirt/src/qemu/qemu_command.c:152:
overrun-buffer-val: Overrunning static array "net->mac" of size 6 bytes 
by passing it as an argument to a function which indexes it at byte 
position 15.
/libvirt/src/util/virnetdevmacvlan.c:948:
access_dbuff_const: Calling 
"virNetDevMacVLanVPortProfileRegisterCallback" indexes array 
"macaddress" at byte position 15.
/libvirt/src/util/virnetdevmacvlan.c:773:
access_dbuff_const: Calling "memcpy" indexes array "macaddress" with 
index "16UL" at byte position 15.

Error: OVERRUN_STATIC:
/libvirt/src/qemu/qemu_migration.c:2744:
overrun-buffer-val: Overrunning static array "net->mac" of size 6 bytes 
by passing it as an argument to a function which indexes it at byte 
position 15.
/libvirt/src/util/virnetdevmacvlan.c:773:
access_dbuff_const: Calling "memcpy" indexes array "macaddress" with 
index "16UL" at byte position 15.

Error: OVERRUN_STATIC:
/libvirt/src/qemu/qemu_driver.c:435:
overrun-buffer-val: Overrunning static array "net->mac" of size 6 bytes 
by passing it as an argument to a function which indexes it at byte 
position 15.
/libvirt/src/util/virnetdevmacvlan.c:1036:
access_dbuff_const: Calling 
"virNetDevMacVLanVPortProfileRegisterCallback" indexes array 
"macaddress" at byte position 15.
/libvirt/src/util/virnetdevmacvlan.c:773:
access_dbuff_const: Calling "memcpy" indexes array "macaddress" with 
index "16UL" at byte position 15.


---
  src/util/virnetdevmacvlan.c |    2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

Index: libvirt-acl/src/util/virnetdevmacvlan.c
===================================================================
--- libvirt-acl.orig/src/util/virnetdevmacvlan.c
+++ libvirt-acl/src/util/virnetdevmacvlan.c
@@ -435,7 +435,7 @@ static const uint32_t modeMap[VIR_NETDEV
  struct virNetlinkCallbackData {
      char *cr_ifname;
      virNetDevVPortProfilePtr virtPortProfile;
-    unsigned char macaddress[VIR_UUID_BUFLEN];
+    unsigned char macaddress[VIR_MAC_BUFLEN];
      char *linkdev;
      int vf;
      unsigned char vmuuid[VIR_UUID_BUFLEN];