Heh. 
I’m inclined to think it’s a reference to the Star Wars character, rather than a real typo.
https://www.pagetable.com/?p=1391
The Commodore 64 Programmer’s Reference Guide contains a memory map with a complete description of the zeropage and system variables used by KERNAL and BASIC, but now that we have the original source, we know there are three typos in this table.
It references this github holding the original source code for various Commodore computers and peripherals