stm class: Use memcat_p()

static const struct config_item_type stp_policy_type;

static const struct config_item_type stp_policy_node_type;

/* lifted from arch/x86/events/core.c */

static struct configfs_attribute **merge_attr(struct configfs_attribute **a, struct configfs_attribute **b)

{

	struct configfs_attribute **new;

	int j, i;

	for (j = 0; a[j]; j++)

		;

	for (i = 0; b[i]; i++)

		j++;

	j++;

	new = kmalloc_array(j, sizeof(struct configfs_attribute *),

			    GFP_KERNEL);

	if (!new)

		return NULL;

	j = 0;

	for (i = 0; a[i]; i++)

		new[j++] = a[i];

	for (i = 0; b[i]; i++)

		new[j++] = b[i];

	new[j] = NULL;

	return new;

}

const struct config_item_type *

get_policy_node_type(struct configfs_attribute **attrs)

{

	if (!type)

		return NULL;

	merged = merge_attr(stp_policy_node_attrs, attrs);

	merged = memcat_p(stp_policy_node_attrs, attrs);

	if (!merged) {

		kfree(type);

		return NULL;