[Midnightbsd-cvs] src: spellprog.c: cast to avoid unsigned to signed comparison

[laffer1 at midnightbsd.org]

Log Message:
-----------
cast to avoid unsigned to signed comparison

Modified Files:
--------------
    src/usr.bin/spell/spellprog:
        spellprog.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/usr.bin/spell/spellprog/spellprog.c?r1=1.2&r2=1.3)