Fixes wrong @bxxx[i] return values of B source, ignoring the m parameter.

Reported in bug 734 by Stefan.

src/spicelib/devices/asrc/asrcask.c

@@ -58,7 +58,7 @@ ASRCask(CKTcircuit *ckt, GENinstance *instPtr, int which, IFvalue *value, IFvalu
         if (here->ASRCtype == ASRC_VOLTAGE)
             value->rValue = ckt->CKTrhsOld[here->ASRCbranch];
         else
-            value->rValue = here->ASRCprev_value;
+            value->rValue = here->ASRCprev_value * here->ASRCm;
         return(OK);
     case ASRC_OUTPUTVOLTAGE:
         value->rValue =