[HarfBuzz] enum issue

[Werner LEMBERG]

> Compiling with -ansi using

Compiling FreeType's current git, that is.

>   i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1
>   (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
> 
> I get the following warning:
> 
>   hb-common.h:280: warning:
>     ISO C restricts enumerator values to range of 'int'
> 
> Nothing really serious, but probably worthwhile to mention...

It's rather -ansi -pedantic, sorry.


    Werner