kvm: x86: fix kvm_apic_has_events to check for NULL pointer

Malicious (or egregiously buggy) userspace can trigger it, but it
should never happen in normal operation.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/lapic.h

@@ -150,7 +150,7 @@ static inline bool kvm_apic_vid_enabled(struct kvm *kvm)

static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.apic->pending_events;
	return kvm_vcpu_has_lapic(vcpu) && vcpu->arch.apic->pending_events;
}

static inline bool kvm_lowest_prio_delivery(struct kvm_lapic_irq *irq)