increase the fps

[hjinlee88]

Replace lines 56-56 in "test.py" with the following:

    # scores = torch.zeros(1, cfg.DATASET.num_class, segSize[0], segSize[1])
    # scores = async_copy_to(scores, gpu)

to scores = torch.zeros(1, cfg.DATASET.num_class, segSize[0], segSize[1], device=torch.device("cuda", gpu))

This change is to make a zeros tensor on the GPU.