Fix powerpc64 g77

[Gabriel Dos Reis]

Alan Modra <amodra@bigpond.net.au> writes:

[...]

| +#if HOST_BITS_PER_WIDE_INT == 32

I think the preferred construct in such case is

   if (HOST_BITS_PER_WIDE_INT == 32)
     {
     }

-- Gaby