fsck messages through Usplash

[Iñigo Varela]

Hi translators,
Since grub has now become translatable, it seems that the only strings
untranslatable are:

"Filesystem checks are in progress (xx)%" and "Press ESC to skip". (it
happens during Usplash)

I have found in this bug something relating to this:
https://bugs.edge.launchpad.net/ubuntu/+source/usplash/+bug/207387 

Gabor Kelemen says in comment #4: "Those were fixed yesterday in bug
#390740 :)"

But I've followed the bug, and I can't see the way to translate them.

am I on a mistake?