Base classes used polymorphically whose child classes have data members or

destructors must themselves have virtual destructors or Bad Things(TM)
happen.

src/TransactionMeta.h

@@ -46,6 +46,7 @@ protected:
 
 public:
 	TransactionMetaNodeEntry(int type) : mType(type) { ; }
+	virtual ~TransactionMetaNodeEntry() { ; }
 
 	int getType() const { return mType; }
 	virtual Json::Value getJson(int) const = 0;