Fix crash when receiving unregistered remotes

serial_link/protocol/transport.c

@@ -71,6 +71,7 @@ void add_remote_objects(remote_object_t** _remote_objects, uint32_t _num_remote_
 
 void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size) {
     uint8_t id = data[size-1];
+    if (id < num_remote_objects) {
         remote_object_t* obj = remote_objects[id];
         uint8_t* start;
         if (obj->object_type == MASTER_TO_ALL_SLAVES) {
@@ -88,6 +89,7 @@ void transport_recv_frame(uint8_t from, uint8_t* data, uint16_t size) {
         memcpy(ptr, data, size -1);
         triple_buffer_end_write_internal(tb);
     }
+}
 
 void update_transport(void) {
     unsigned int i;