IQK_ROUND_INVALID
u8 final_candidate = IQK_ROUND_INVALID;
if (final_candidate == IQK_ROUND_INVALID) {
u8 final_candidate = IQK_ROUND_INVALID;
if (final_candidate == IQK_ROUND_INVALID) {
u8 candidate[PATH_NR] = {IQK_ROUND_INVALID, IQK_ROUND_INVALID};
if (candidate[i] == IQK_ROUND_INVALID)