A patch to further fix 2GBFIX.

Using 2GBFIX, found that my DOS word processor (the obscure Celebrity) STILL
wouldn't save if free space > 2G AND file > 65000, so experimented with
patching $FFFF value returned (MAXCLUSTERS in .asm, offsets $0174 and $018A in
.com); $FFFE didn't help, but $FF00 solved my problem. (BTW, I rarely edit
files over 65000 bytes, though the program isn't limited, so perhaps will run
into this yet again sometime when free space + file size exceeds maxint!)

This may apply only to my unique circumstances with a cranky but cherished
antique w/p. But I noticed that 2GBFIX is in the top 50 downloads from Hobbes
in May of 2007 (!), so this patch to it may help someone else. -- I'm not the
author (my thanks to him), just long-time user of 2GBFIX.

Patching the .com with debug from a DOS prompt is easier than re-assembling:

>debug 2gbfix.com
-e cs:0174
(shows byte as FF; type 00, and <enter>)
-e cs:018a
(again shows byte as FF; type 00, and <enter>)
-w
-q
> (done, back to DOS prompt)

If trying other values, remember that in Intel format numbers are stored with
the lower-order byte in the lower address!