bufferevent_ssl: do not return NULL from upcast /src/le/libevent/bufferevent_ssl.c:863: error: Null Dereference pointer `bev_ssl` last assigned on line 855 could be null and is dereferenced at line 863, column 6. 861. r2 = start_writing(bev_ssl); 862. 863. if (bev_ssl->underlying) { ^ 864. if (events & EV_READ) 865. BEV_RESET_GENERIC_READ_TIMEOUT(bev);