245            dd("found opcode echo location async...");
   CID 258040 (#8 of 8): Explicit null dereferenced (FORWARD_NULL)9. var_deref_model: Passing null pointer computed_args to ngx_http_echo_exec_echo_location_async, which dereferences it. [show details]
246            rc = ngx_http_echo_exec_echo_location_async(r, ctx,
247                                                        computed_args);
248            break;