hv-balloon: avoid alloca() usage

alloca() is frowned upon, replace it with g_malloc0() + g_autofree.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
1 file changed