message: Delete deleted implicit conversion from int to StringData
  This made `object_store::Dictionary::get_any(size_t)` ambiguous with the `StringData` overload.
diff: @@ -86,8 +86,6 @@ public:
  /// Construct a null reference.
  StringData() noexcept;
  - StringData(int) = delete;
  -
  /// If \a external_data is 'null', \a data_size must be zero.
  StringData(const char* external_data, size_t data_size) noexcept;
  