[Piglit] [PATCH] s3tc-errors: Fix GCC unused-function warning.

[Erik Faye-Lund]

Thanks for fixing up my mistake!

Reviewed-by: Erik Faye-Lund <erik.faye-lund at collabora.com>

On Mon, 2019-05-06 at 17:02 +0000, Vinson Lee wrote:
> s3tc-errors.c:155:1: warning: ‘check_gl_error2_’ defined but not used
> [-Wunused-function]
>  check_gl_error2_(GLenum err1, GLenum err2, int line)
>  ^~~~~~~~~~~~~~~~
> 
> Fixes: Fixes: d433792407e7 ("s3tc-errors: port to gles31")
> Signed-off-by: Vinson Lee <vlee at freedesktop.org>
> ---
>  tests/texturing/s3tc-errors.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/tests/texturing/s3tc-errors.c b/tests/texturing/s3tc-
> errors.c
> index 6b2658c9a1d1..a356ea2149ce 100644
> --- a/tests/texturing/s3tc-errors.c
> +++ b/tests/texturing/s3tc-errors.c
> @@ -147,6 +147,7 @@ check_rendering_(int width, int height, int line)
>  #define check_rendering(w, h) check_rendering_(w, h, __LINE__)
>  
>  
> +#ifdef PIGLIT_USE_OPENGL
>  /**
>   * Check for either of two expected GL errors.
>   * XXX this could be a piglit util function
> @@ -164,6 +165,7 @@ check_gl_error2_(GLenum err1, GLenum err2, int
> line)
>  }
>  
>  #define check_gl_error2(err1, err2)  check_gl_error2_(err1, err2,
> __LINE__)
> +#endif
>  
>  
>  static bool