message: Make the destructor virtual (OSX Big Sur)
diff: class AliFlowAnalysisQvecEvent {
  public:
  AliFlowAnalysisQvecEvent();
  - ~AliFlowAnalysisQvecEvent();
  + virtual ~AliFlowAnalysisQvecEvent();
  void setRunNum( Int_t runNum ) { this->fRunNum = runNum; }
  Int_t getRunNum() { return fRunNum; }
  void setCentrality( Double_t centrality ) { this->fCentrality = centrality; }
  