add debug get() to iterator

c_os/user/lib/Iterator.h

@@ -9,11 +9,17 @@ namespace bse {
     template<typename T>
     class ContinuousIterator {
     private:
-        T* ptr;
+        T* ptr = nullptr;
+
+        ContinuousIterator() = delete;
 
     public:
         ContinuousIterator(T* ptr) : ptr(ptr) {}
 
+        T* get() const {
+            return ptr;
+        }
+
         ContinuousIterator& operator++() {
             ++this->ptr;
             return *this;