[OpenCL] fix for the restriction on pointers to functions

[Pekka Jääskeläinen]

Hi,

I think this patch looks fine (usual disclaimer: not a Clang frontend).
Did you ensure this still allows the OpenCL 2.0 Blocks?

On 02/12/2014 06:21 PM, Anastasia Stulova wrote:
> Hi,
>
> Please, review my patch that produces proper diagnostic messages, when pointers
> to functions are used in OpenCL (restriction from v1.0 s6.8.a.3)
>
> The test program is provided as well.
>
> Thanks,
>
> Anastasia