Since 9c5ce8db, the uuid is wrongly copied, as QemuUUID 'in' argument is
already a pointer.

Fixes ASAN complaining:
hw/smbios/smbios.c:489:5: runtime error: load of address 0x7fffcdb91b00
with insufficient space for an object of type '__int128 unsigned'
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20160928143810.25558-1-marcandre.lureau@redhat.com>
Reviewed-by: NLaszlo Ersek <lersek@redhat.com>
[Warp the long error message line in commit message. - Fam]
Signed-off-by: NFam Zheng <famz@redhat.com>