sequence_queue遍历方法错误，当rear小于front无法遍历

[cjy513203427]

正确的如下

// Traverse queue in turn
Status QueueTraverse(SqQueue Q)
{
	int i;
	i = Q.front;
	for (i =Q.front; i < QueueLength(Q) + Q.front; i++) {
		visit(Q.data[i%MAXSIZE]);
	}
	printf("\n");
	return OK;
}