
Function send_response(s, &qdict->base) returns a negative number when any failures occured. But strerror()'s parameter cannot be negative. Let's change the testing condition and pass '-ret' to strerr(). Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>