ret = acmDriverOpen(&had, (HACMDRIVERID)wadi, 0L);
if (ret == MMSYSERR_NOERROR) {
- if ((wad = MSACM_GetDriver(had)) != 0) {
+ if ((wad = MSACM_GetDriver(had)) != NULL) {
was->obj.pACMDriverID = wad->obj.pACMDriverID;
was->pDrv = wad;
was->hAcmDriver = had;