nil deref fix

internal/vcenter/vcenter.go

@@ -404,10 +404,14 @@ func (v *Vcenter) GetClusterFromHost(hostRef *types.ManagedObjectReference) (str
 		v.Logger.Error("cant get host", "error", err)
 		return "", err
 	}
+	if host == nil {
+		v.Logger.Warn("host lookup returned nil", "host_ref", hostRef)
+		return "", nil
+	}
 
 	v.Logger.Debug("host parent", "parent", host.Parent)
 
-	if host.Parent.Type == "ClusterComputeResource" {
+	if host.Parent != nil && host.Parent.Type == "ClusterComputeResource" {
 		// Retrieve properties of the compute resource
 		var moCompute mo.ComputeResource
 		err = v.client.RetrieveOne(v.ctx, *host.Parent, nil, &moCompute)
@@ -651,7 +655,7 @@ func (v *Vcenter) GetVMFolderPath(vm mo.VirtualMachine) (string, error) {
 	folderPath := ""
 	//v.Logger.Debug("parent is", "parent", parentRef)
 
-	for parentRef.Type != "Datacenter" {
+	for parentRef != nil && parentRef.Type != "Datacenter" {
 		// Retrieve the parent object
 		//parentObj, err := finder.ObjectReference(v.ctx, *parentRef)
 		//if err != nil {
@@ -681,5 +685,9 @@ func (v *Vcenter) GetVMFolderPath(vm mo.VirtualMachine) (string, error) {
 		//break
 	}
 
+	if parentRef == nil {
+		return "", fmt.Errorf("folder traversal terminated early for VM %s", vm.Name)
+	}
+
 	return folderPath, nil
 }