- ret_hu_conv.ptrs_to.add(ret_hu_conv);
- ret_hu_conv.ptrs_to.add(payer);
- ret_hu_conv.ptrs_to.add(router);
- ret_hu_conv.ptrs_to.add(scorer);
- ret_hu_conv.ptrs_to.add(logger);
- ret_hu_conv.ptrs_to.add(event_handler);
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(payer); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(router); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(scorer); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(logger); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(event_handler); };