[m-rev.] diff: shut up many test warnings

[Zoltan Somogyi]

This should not need review.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Log.nw
Type: application/octet-stream
Size: 1570 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20250221/fc62297f/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DIFF.nw
Type: application/octet-stream
Size: 47448 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20250221/fc62297f/attachment-0003.obj>