Bug#1207: cal produces malformed error message

[richard@elmail.co.uk (Richard Kettlewell)]

Package: bsdutils
Version: 1.3-1

(or if it's not malformed, it's stupid.)

        sfere:richard$ cal 1995 9
        (null): illegal month value: use 1-12
        sfere:richard$

libc is 4.6.27.

ttfn/rjk