There is a bug in the utility used to rotate the offensive files.
The problem lies in taking the result of getchar() and storing it 
in a char instead of an int (getchar returns an int) which causes
the comparison against EOF to always be true.

rot.diff fixes this.  It is a patch against fortune-mod-9708
which is available on sunsite, and the most current version as of 
2004-09-07.  When unpacked, rot.c is in $SOURCEDIR/util/rot.c