setup-disk: fix hang with UEFI and interactive 'none'
Fix a hang that happens with interactively selecting 'none' with efi mode.
Fixes commit 851247d9 (setup-disk: calculate size of ESP parition for grub)
Fix a hang that happens with interactively selecting 'none' with efi mode.
Fixes commit 851247d9 (setup-disk: calculate size of ESP parition for grub)