[PATCH] Fix C++ build for Cygwin

[Jon Turney]

On 03/06/2016 11:57, Pedro Alves wrote:
> On 06/02/2016 03:14 PM, Jon Turney wrote:
>
>> 	* windows-nat.c (handle_output_debug_string): return type of
>
> Uppercase "Return".
>
> OK.

Pushed with that correction.