added virtual deconstructor MenuIntInputWrapper

lib/Menu/menuIntInput.cpp

@@ -58,6 +58,7 @@ MenuIntInput::~MenuIntInput() {
     delete this->stepsPerInput;
     delete this->values;
     delete this->names;
+    delete this->wrapper;
 }
 
 void MenuIntInput::setEntry(uint8_t valueNumber, const char* name, int16_t startValue) {

lib/Menu/menuIntInput.h

@@ -18,6 +18,7 @@
 
 class MenuIntInputWrapper {
     public:
+        virtual ~MenuIntInputWrapper() {}
         virtual void action(int16_t* values, uint8_t length) = 0;
 };