rem: if (st) { GET_SYNC_TOKEN(et,st); }
add: if (st) GET_SYNC_TOKEN(et,st);
context: status_t RELEASE_ENGINE(engine_token *et, sync_token *st) {	/* update the sync token, if any */	if (st) {		GET_SYNC_TOKEN(et,st);	}	/* release the shared benaphore */	RELEASE_BEN(si->engine.lock)	return B_OK;}