Viewer warns about absent catdoc&word2x _before_ exit for zzz.doc with zzz.doc inside

[Andrew V. Samoilov]

Hello!

Andrew W. Nosenko <awn at bcs.zp.ua> reported strange bug with files named 
like zzz.doc with only zzz.doc line inside. There is Linux box without 
catdoc & word2x:
$ echo zzz.doc > zzz.doc
F3 zzz.doc
zzz.doc is showed ok in the viewer.
F10, F3, q, etc -- and warning window with message about absent catdoc 
and word2x appears.

mc 4.6.0pre1b.

--
Regards,
Andrew V. Samoilov.