correcting comment in TrackMultiplexer.cc

L1Trigger/TrackFindingTracklet/src/TrackMultiplexer.cc

@@ -395,7 +395,6 @@ namespace trklet {
     deque<Track*> accepted;
     vector<deque<Track*>> stacks(channelAssignment_->numChannelsTrack());
     vector<deque<Track*>> streams(channelAssignment_->numChannelsTrack());
-    // mux order affects DR
     for (int channel = 0; channel < channelAssignment_->numChannelsTrack(); channel++)
       for (Track* track : input_[channel])
         streams[channel].push_back((track && track->valid_) ? track : nullptr);
@@ -408,12 +407,11 @@ namespace trklet {
            !all_of(stacks.begin(), stacks.end(), [](const deque<Track*>& tracks) { return tracks.empty(); })) {
       // fill input fifos
       for (int channel = 0; channel < channelAssignment_->numChannelsTrack(); channel++) {
-        deque<Track*>& stack = stacks[channel];
         Track* track = pop_front(streams[channel]);
         if (track)
-          stack.push_back(track);
+          stacks[channel].push_back(track);
       }
-      // merge input fifos to one stream, prioritizing higher input channel over lower channel
+      // merge input fifos to one stream, prioritizing lower input channel over higher channel, affects DR
       bool nothingToRoute(true);
       for (int channel = 0; channel < channelAssignment_->numChannelsTrack(); channel++) {
         Track* track = pop_front(stacks[channel]);