🚀 go-pugleaf

[running on a sun3, sunos 3.5]
The routine init_terminal_io calls "xmalloc" but never "free".  It gets
called, it seems, with every (or at least many) SIGWINCH, and in no time
you can have a *VERY* large data segment.  Included is a patch changing
the xmalloc to alloca.  (Then again, maybe it would be best to just
allocate a fixed buffer?)

On the suns,
	$ echo '\'
	\UUUU

Where do the U's come from?

*** save/readline.c	Thu Jun 15 19:04:05 1989
--- readline.c	Thu Jun 15 19:04:09 1989
***************
*** 1234,1240 ****
      return;
    }
  
!   buffer = (char *)xmalloc (2048);
    BC = tgetstr ("pc", &buffer);
    PC = buffer ? *buffer : 0;
    BC = tgetstr ("le", &buffer);
--- 1234,1240 ----
      return;
    }
  
!   buffer = (char *)alloca (2048);
    BC = tgetstr ("pc", &buffer);
    PC = buffer ? *buffer : 0;
    BC = tgetstr ("le", &buffer);