bug#22975: 25.0.92; CANNOT_DUMP build can't start in tty mode

[martin rudalics]

> In tty mode, the CANNOT_DUMP version get stuck in a loop at startup
> complaining that internal-echo-keystrokes-prefix isn’t defined.  If I
> set a breakpoint on Fsignal, it’s first complaining about
> window--resize-root-window-vertically when trying to display the long
> load path, presumably terminating the processing of loadup.el;

Can you please try adding a placeholder function like Paul did with
Fframe_windows_min_size and Fwindow__sanitize_window_sizes.

Thanks, martin