message: Store also events with no tracks
diff: @@ -104,8 +104,8 @@ void AliAnalysisTaskFilterUPCNanoAOD::UserExec(Option_t*)
  }
  //if(!isTriggered || !hasGoodVertex || nGoodTracks == 0) return;
  - if(!isTriggered || nGoodTracks == 0) return;
  - //if(!isTriggered) return;
  + //if(!isTriggered || nGoodTracks == 0) return;
  + if(!isTriggered) return;
  //AliInfo("Good UPC event");
  