fill MC matched histogram if fConfigQA is enabled

fill MC matched histogram if fConfigQA is enabled in track selection

Author: ypwangg

PWGDQ/Tasks/dqEfficiency_withAssoc.cxx

@@ -694,7 +694,7 @@ struct AnalysisTrackSelection {
 
       // compute MC matching decisions and fill histograms for matched associations
       int isig = 0;
-      if (filterMap > 0 && track.has_reducedMCTrack()) {
+      if (filterMap > 0 && track.has_reducedMCTrack() && fConfigQA) {
         // loop over all MC signals
         for (auto sig = fMCSignals.begin(); sig != fMCSignals.end(); sig++, isig++) {
           // check if this MC signal is matched