fc -l history specification out of range with empty history

[Grisha Levit]

If the history is empty (or if HISTSIZE is 1) running `fc -l' produces an error:

    $ history -c
    $ fc -l
    bash: fc: history specification out of range

I'm not sure this is necessary, since other instances of `first' and
`last' being outside of the saved history range don't produce an
error.  Also the `history' command doesn't have this behavior:

    $ history -c
    $ history
        1  history

As a special case, `fc -l -0' usually prints itself but not in the
empty history (or HISTSIZE=1) case.