Fix probe_reset

The probe_reset function didn't work properly,
because its second argument was always NULL.

This changes fixes the probe_reset function by
passing the probe as the second argument.

This change also calls probe_ncache_clear to clear
the ncache instead of calling probe_ncache_free and
probe_ncache_new, like it was done in change
057873a.

src/OVAL/probes/probe/probe_main.c

@@ -87,10 +87,10 @@ static SEXP_t *probe_reset(SEXP_t *arg0, void *arg1)
  * FIXME: implement main loop locking & worker waiting
  */
  probe_rcache_free(probe->rcache);
- probe_ncache_free(probe->ncache);
 
  probe->rcache = probe_rcache_new();
- probe->ncache = probe_ncache_new();
+ probe_ncache_clear(OSCAP_GSYM(ncache));
+ probe->ncache = OSCAP_GSYM(ncache);
 
  return(NULL);
 }
@@ -211,7 +211,7 @@ void *probe_common_main(void *arg)
  if (probe.sd < 0)
  fail(errno, "SEAP_openfd2", __LINE__ - 3);
 
- if (SEAP_cmd_register(probe.SEAP_ctx, PROBECMD_RESET, 0, &probe_reset) != 0)
+ if (SEAP_cmd_register(probe.SEAP_ctx, PROBECMD_RESET, SEAP_CMDREG_USEARG, &probe_reset, &probe) != 0)
  fail(errno, "SEAP_cmd_register", __LINE__ - 1);
 
  /*