COLS() and LINES() shouldn't be cached

[pprocacci]

Programs running a la windows(not the os)/terminals that resize generally deliver a SIGWINCH upon that resize occuring.

COLS() and LINES() should always contain the current window dimensions. Currently they only return the dimensions that they were initially invoked with.

Example:

sub x()
{
  say COLS();
}

initscr();
signal(SIGWINCH).tap: { x() }

loop {
  sleep(1);
}

[pprocacci]

This is my mistake. I forget a necessary endwin in order to refresh the ncurses state.

endwin;
refresh;