nextInChain
updateDirEnt_Start(ndp, nextInChain(endCluster));
*orphanStart = nextInChain(problemCluster);
n = nextInChain(c);
c = nextInChain(c);
while (n = nextInChain(n))
follow = nextInChain(clusterNum);
follow = nextInChain(follow);
c = nextInChain(c);
c = nextInChain(c);
c = nextInChain(c);
follow = nextInChain(follow);
if ((follow = nextInChain(follow)) != 0)
chain = nextInChain(chain);
traverseDir(fd, nextInChain(currentCluster),
extern int32_t nextInChain(int32_t currentCluster);