msi: Fix some copy/paste bugs in the implementation of condition operators.

[EA Durbin]

Can you 100% guarantee that documentation is correct? And that there are no
broken apps that will try to pass negative number?



Vitaliy.

Okay, i guess I see your point, but if the broken app passes a negative 
number its not going to work correctly anyway, as it will read from the 
wrong Disk medium when it encounters the query, once that works correctly.