Don't terminate the array of matching product/vendor IDs with { 0, 0 }

Don't terminate the array of matching product/vendor IDs with { 0, 0 }
when usb_lookup is used.  If a device indeed has 0 as vendor and product
ID, like the  HP DL165 BMC Server Engines SE USB Device, a wrong driver
will attach and the machine will most pbly crash.

Problem reported Rivo Nurges <rix@estpak.ee>
cvs: ----------------------------------------------------------------------