Patch to fix crash on mingw and nil-typenames.

[Yao Qi]

On 10/12/2011 04:35 PM, Joost van der Sluis wrote:
> 2011-10-12  Joost van der Sluis  <joost@cnoc.nl>
> 
>         * gdbtypes.h Added TYPE_SAFE_NAME macro to get the name of a 
                      ^ Please add a ":" here.

>         type or "<unnamed type"> when there is no name assigned. 


-- 
Yao (齐尧)