I think if their address is not Canada or US address, it will be okay. As for me, I forgot to put zip code for my adress (outside of US or Canada) and my country as it doesn't have enough space. But I think it's safe to wait than to bring this into their attention, and just correct if they ask to resubmit, we must be overthinking it. Or it really depends on the officer handling it, let's just hope it will be okay. That is just my opinion. But if there are other changes in your cicumstances like change or employer/job etc. we should make them aware of it once we have temporary file number or AOR.
I think you're right bcakes, thanks!