Re: Fformat fails to detect premature end of string

[Richard M. Stallman]

    Surely, this is not a generic solution to finding the end of a string
    (if string contains other NUL's), but for the specific case it is ok,
    since %<NUL> is not a valid format specifier, and Fformat signals an
    error for an invalid format string.

I think my change makes the code cleaner
because it requires less work to prove to onself it is correct.
(It is also faster, though that probably is insignificant.)