fix memory leak in lcpa linked list

[marenz2569]

The last element of the linked list in the struct lcpa_metapack will not get freed with the current implementation of lcpa_free. This pull request fixes the resulting memory leak.

[slamm-archkilla]

void lcpa_free(struct lcpa_metapack *in_head) {
struct lcpa_metapack *cur, *next;

for (cur = in_head; cur != NULL; cur = next) {
    next = cur->next;
    if (cur->freedata)
        free(cur->data);
    free(cur);
}

}