fixes for bell function

xup/xup.h

@@ -26,7 +26,7 @@
 #include "os_calls.h"
 #include "defines.h"
 
-#define CURRENT_MOD_VER 1
+#define CURRENT_MOD_VER 2
 
 struct mod
 {
@@ -86,7 +86,8 @@ struct mod
   int (*server_send_to_channel)(struct mod* v, int channel_id,
                                 char* data, int data_len,
                                 int total_data_len, int flags);
-  tbus server_dumby[100 - 24]; /* align, 100 minus the number of server
+  int (*server_bell_trigger)(struct vnc* v);
+  tbus server_dumby[100 - 25]; /* align, 100 minus the number of server
                                   functions above */
   /* common */
   tbus handle; /* pointer to self as long */