Fade for a while

Results 2 issues of Fade for a while

https://github.com/cnr-isti-vclab/vcglib/blob/65b933202fbb39da8c50006f39cfc22370fa453a/vcg/complex/base.h#L472 I think it should be: ```c inline int MemNeeded() const {return Mem(vn,fn,tn);} ```

Thank you very much for sharing such a high-quality method for reconstructing geometric models. I have found that it can restore real geometric details with high precision. However, I have...