Add a missing mdstr_unref
@ -318,6 +318,7 @@ grpc_call_error grpc_call_cancel_with_status(grpc_call *c,
maybe_set_status_code(c, status);
if (details) {
maybe_set_status_details(c, details);
grpc_mdstr_unref(details);
}
gpr_mu_unlock(&c->read_mu);
return grpc_call_cancel(c);