waveform: Add back lost PACT = TRUE

Fixes GitHub Issue #187

modules/database/src/std/rec/waveformRecord.c

@@ -139,6 +139,7 @@ static long process(struct dbCommon *pcommon)
     if (!pact && prec->pact)
         return 0;
 
+    prec->pact = TRUE;
     prec->udf = FALSE;
     recGblGetTimeStampSimm(prec, prec->simm, &prec->siol);