ZhangYaoll

Results 2 issues of ZhangYaoll

line 102 and line 105 in file ./model/pointnet2_utils.py, should N to be changed N - 1? ![image](https://github.com/yanx27/Pointnet_Pointnet2_pytorch/assets/53884785/9b582060-befd-4392-84ee-2529c7c1fd58)

Is it a typo that collect_point_label be in line 170? ![image](https://github.com/yanx27/Pointnet_Pointnet2_pytorch/assets/53884785/897bba07-cf88-4d72-b850-4e4674cf6872)