Missing Code（代码遗漏导致无法运行）

[MondayZhou]

https://github.com/MegEngine/Models/blob/11013f6b3b252df71098b27714e39d9802d2520d/official/vision/classification/shufflenet/inference.py#L63

Missing Code

There is one line of missing code for transforming ndarray into tensor. It will lead to an error: 该码下遗漏了一行将ndarray转换成tensor的代码，导致在运行的时候报错：

TypeError: op Convolution expect type Tensor as inputs, got numpy.ndarray actually

Solution

Adding these below L63: L63下面应添加：

    processed_img = megengine.tensor(processed_img, dtype="float32")

[haolongzhangm]

@MondayZhou 如果可能的话， 帮忙提一个PR