init: fixed mounting of encrypted savefile

Ok, I think I found it!
Perhaps it could be done in a bit more "economical" way, but I don't want to mess with init too much...

Tested and:
- mounting encrypted savefile - [OK]
- increasing the size of encrypted savefile - [OK]
- mounting encrypted savefile when 'pupsaveresizenew.txt' exists, but for another savefile - [OK]

however if someone would like to double-check, I'd be grateful.

Additionally, I re-enabled the ability to fsck encrypted savefile (if pfix=fsck).
Since when I have it enabled (about 4 months ago or maybe more?) it's only better!

Greetings!