make base class destructor virtual

This actually caused crashes on MacOS, and it is definitely a bug by
any account...


Former-commit-id: e83b11cc611b0a42e4450b455d79a9157645d631

PhysicsAnalysis/AnalysisCommon/IsolationSelection/IsolationSelection/IsolationCondition.h

@@ -34,7 +34,7 @@ namespace CP {
            
             IsolationCondition(const IsolationCondition& rhs) = delete;
             IsolationCondition& operator=(const IsolationCondition& rhs) = delete;
-            ~IsolationCondition();
+            virtual ~IsolationCondition();
          
             std::string name() const;