- generic_rw(&sin->pos.parent, &stream_class->event_context->p);
- generic_rw(&sout->parent, &stream_class->event_context->p);
+ ret = generic_rw(&sin->pos.parent, &stream_class->event_context->p);
+ if (ret)
+ return ret;
+ ret = generic_rw(&sout->parent, &stream_class->event_context->p);
+ if (ret)
+ return ret;