[m-rev.] for post-commit review: stop ignoring fatal errors early

[Zoltan Somogyi]

For review by anyone.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Log.ie
Type: application/octet-stream
Size: 1831 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20250125/92b5ac5f/attachment-0002.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DIFF.ie
Type: application/octet-stream
Size: 43659 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20250125/92b5ac5f/attachment-0003.obj>