ResNet Scale transform is buggy

[szagoruyko]

There are several bugs in these lines https://github.com/pytorch/examples/blob/master/imagenet/transforms.py#L48

• h and w are integers in python and should be casted to float before division
• should be self.size instead of w as in https://github.com/facebook/fb.resnet.torch/blob/master/datasets/transforms.lua#L45

(I only tested this class, was doing some visualizations)

[colesbury]

Were these fixed by @ngimel's change from yesterday?
80aee30

[szagoruyko]

@colesbury doesn't seem so