About the numeric scale of the dicriminator loss

[Muming-Zhao]

Dear author,

I was using this code for my project and I found the discriminator loss is further divided by 2. I am not very clear with GAN and could you please help explain why to divide 2? https://github.com/wasidennis/AdaptSegNet/blob/fca9ff0f09dab45d44bf6d26091377ac66607028/train_gta2cityscapes_multi.py#L362

Thanks a lot!