xC: hackfix Readline 8.3

xC.c

@@ -653,10 +653,15 @@ input_rl_buffer_destroy (void *input, input_buffer_t input_buffer)
 		HISTORY_STATE *state = history_get_history_state ();
 
 		history_set_history_state (buffer->history);
+
+		// TODO: Actually figure out why these cause crashes later.
+#if RL_READLINE_VERSION <= 0x0802
 		rl_clear_history ();
 		// rl_clear_history just removes history entries,
 		// we have to reclaim memory for their actual container ourselves
 		free (buffer->history->entries);
+#endif
+
 		free (buffer->history);
 		buffer->history = NULL;