torch.cuda.is_available bug

[glenn-jocher]

test.py and train.py always return cuda = True because boolean is reflecting function presence rather than cuda presence. Also redundant if statement. Suggest replace
cuda = True if torch.cuda.is_available else False

with
cuda = torch.cuda.is_available()

[alexandru-dinu]

If you want to be extra pedantic, I'd also suggest to add:

cuda = args.use_cuda and torch.cuda.is_available()

[eriklindernoren]

This is resolved in 84f3e13