net/vde: print error on vde_open() failure

Despite the fact that now when the initialization of vde fails, qemu
does not end silently, no informative error is printed. The patch
generates an error and pushes it through the calling function.

Related bug: https://bugs.launchpad.net/qemu/+bug/676029

Signed-off-by: Julia Suvorova <jusual@mail.ru>
Signed-off-by: Jason Wang <jasowang@redhat.com>
1 file changed