Disable ASYNCH messages at enter Local repair state.

This will fix recovery time at test which test Border router timeout.

Author: Juha Heiuskanen

source/6LoWPAN/ws/ws_bootstrap.c

@@ -2595,6 +2595,8 @@ static void ws_bootstrap_rpl_callback(rpl_event_t event, void *handle)
 
     } else if (event == RPL_EVENT_LOCAL_REPAIR_START) {
         tr_debug("RPL local repair start");
+        //Disable Asynchs
+        ws_bootstrap_asynch_trickle_stop(cur);
         ws_nwk_event_post(cur, ARM_NWK_NWK_CONNECTION_DOWN);
 
     } else if (event == RPL_EVENT_DAO_PARENT_ADD) {