bug#20464: 25.0.50; `use-hard-newlines` mode should not prompt the user when called non-interactively

[Drew Adams]

>     When enabling, if there are newlines in the buffer but no hard
>     newlines, ask the user whether to mark as hard any newlines
>     preceding a `paragraph-start' line.  From a program, second arg
>     INSERT specifies whether to do this; it can be `never' to change
>     nothing, t or `always' to force marking, `guess' to try to do
>     the right thing with no questions, nil or anything else to ask the
>     user.

My bad. I will close this bug. Thx.