add _ in "bad option termination" file : weird.log

I found this new event :

  bad option termination

in weird.log

but this event not contains "_" ?

Possible change to : ?

  bad_option_termination

The whole "weird" framework needs reworking, similar to what's been done
for alerts. Given that (and because there are many such glitches), I'm
not inclined to fix minor glitches like the above for now.

    Vern