Fix cursor display in register window

[Didier Vidal]

[...]
> It's probably better to attach these as files to the message rather than
> in-lining them; the line-wrapping near "&strong_pos" above caused the
> patch to reject, and a bit of pain to edit, &c..  No problem at all,
> just fyi.
> 
> Also, there was weirdness that I simply could not explain in applying
> this gnucash-item-edit.c patch ... I thought it was a space-vs-tab issue
> (your patch appears to have just spaces, but the source file has tabs),
> but even after eliminating that difference, patch simply refused to
> apply it.  I ended up making the same changes by hand.

Sorry about this. I forgot that my mailer agent might reformat the white
spaces.

For info, I also paid the price for it, because I had conflicts when
updating the files :-)

Didier.

> 
> Thanks for the patches!
> 
> ...jsled