Michael LIAO e3d7baceff [hcc] Fix previous replacement of result_of_t. ...

- `result_of_t` is defined as the shortcut of
  ```
  template< class T >
  using result_of_t = typename result_of<T>::type;
  ```


[ROCm/hip commit: 63e47e525b]

2019-08-26 10:58:38 -04:00

..

hip

[hcc] Fix previous replacement of result_of_t.

2019-08-26 10:58:38 -04:00