NEVERHOOD: Fixed one of the issues in #6513

The getKloggsTextIndex() function would return 40 twice in a row
when wrapping around. This caused one of Willie's nonsense letters
to appear instead, since they're supposed to trigger when
getTextIndex1() returns the same result more than once.

The same bug also appeared (and has been fixed) in getTextIndex3(),
but there it just caused the same nonsense letter to appear twice.
NEVERHOOD: Fixed off-by-one error in getTextIndex3()

This is the same fix that was applied to getKloggsTextIndex() some
time ago. It restores a missing Willie nonsense letter. While I
haven't actually verified for myself that this letter appears in
the original game, it is referenced in Wikipedia's article about
Absalom.