[ldapvi] cb_set_readline_default on Solaris 10

[Ryan Lovett]

With ldapvi 1.7 on Solaris 10 linking to libcurses or the SFW libncurses,
ldapvi segfaults in cb_set_readline_default in misc.c. With:

  --- misc.c.orig 2007-05-05 03:17:26.000000000 -0700
  +++ misc.c  2009-02-12 12:08:30.173952000 -0800
  @@ -337,7 +337,9 @@
   static int
   cb_set_readline_default()
   {
  +  printf("cb_set_readline_default()\n");
    rl_insert_text(readline_default);
  +  printf("cb_set_readline_default(): done\n");
    return 0;
   }

and then:

  --- Login
  Type M-h for help on key bindings.

  cb_set_readline_default()
  cb_set_readline_default(): done
  Filter or DN: [snip]
  cb_set_readline_default()
  Segmentation Fault (core dumped)

I changed the function to just return 0 immediately without invoking
rl_insert_text and ldapvi behaved normally.

Ryan