adding operator* to help working with primitive values

lib/sanitizer_common/sanitizer_addrhashmap.h

public:
   class Handle {
    public:
     Handle(AddrHashMap<T, kSize> *map, uptr addr);
     Handle(AddrHashMap<T, kSize> *map, uptr addr, bool remove);
     Handle(AddrHashMap<T, kSize> *map, uptr addr, bool remove, bool create);
 
     ~Handle();
     T *operator->();
+    T &operator*();
+    const T &operator*() const;
     bool created() const;
     bool exists() const;
 
    private:
     friend AddrHashMap<T, kSize>;
     AddrHashMap<T, kSize> *map_;
     Bucket                *bucket_;
     Cell                  *cell_;
AddrHashMap<T, kSize>::Handle::~Handle() {
   map_->release(this);
 }
 
 template <typename T, uptr kSize>
 T *AddrHashMap<T, kSize>::Handle::operator->() {
   return &cell_->val;
 }
 
-template<typename T, uptr kSize>
+template <typename T, uptr kSize>
+const T &AddrHashMap<T, kSize>::Handle::operator*() const {
+  return cell_->val;
+}
+
+template <typename T, uptr kSize>
+T &AddrHashMap<T, kSize>::Handle::operator*() {
+  return cell_->val;
+}
+
+template<typename T, uptr kSize>
 bool AddrHashMap<T, kSize>::Handle::created() const {
   return created_;
 }
 
 template<typename T, uptr kSize>
 bool AddrHashMap<T, kSize>::Handle::exists() const {
   return cell_ != nullptr;
 }