Needed for new(er) readline.

--- parted-1.8.8/parted/ui.c.orig
+++ parted-1.8.8/parted/ui.c
@@ -1385,7 +1385,7 @@
 
 #ifdef HAVE_LIBREADLINE
         rl_initialize ();
-        rl_attempted_completion_function = (CPPFunction*) complete_function;
+        rl_attempted_completion_function = (rl_completion_func_t *) complete_function;
         readline_state.in_readline = 0;
 #endif