sysevent_evc_unbind
(void) sysevent_evc_unbind(ch);
(void) sysevent_evc_unbind(sysev_evc);
(void) sysevent_evc_unbind(arg);
(void) sysevent_evc_unbind(cip->ci_binding);
(void) sysevent_evc_unbind(fmevt_outbound_chan);
(void) sysevent_evc_unbind(evc);
(void) sysevent_evc_unbind(ihdl->sh_binding);
(void) sysevent_evc_unbind(ds_evchan);
(void) sysevent_evc_unbind(ds_evchan);
(void) sysevent_evc_unbind(zevtchan->zn_eventchan);
(void) sysevent_evc_unbind(((struct znotify *)handle)->zn_eventchan);
(void) sysevent_evc_unbind(bofi_error_chan);
(void) sysevent_evc_unbind(error_chan);
(void) sysevent_evc_unbind(error_chan);
extern int sysevent_evc_unbind(evchan_t *);
(void) sysevent_evc_unbind(sp->evchan);