length value for epr-10187.88 rom is wrong

[djcouchycouch]

When loading epr-10187.88, it checks for a file length of 0x10000 but it should be 0x08000 instead.

[djyt]

Thanks for this. Low and behold, I have fixed this, only 6 years later...

c1fd627 - Corrected Z80 rom length