Committed: include/tr1/functional (hash<std::wstring>): Wrap in #ifdef _GLIBCXX_USE_WCHAR_T

[Eric Botcazou]

> Committed as obvious.
>
> It seems
> libstdc++-v3/testsuite/tr1/6_containers/unordered/instantiate/hash.cc
> should be similarly wrapped, because I see the same error
> message in the testsuite log.
>
> 	PR libstdc++/20071
> 	* include/tr1/functional (hash<std::wstring>): Wrap in #ifdef
> 	_GLIBCXX_USE_WCHAR_T.

Thanks, this really helped on Solaris 2.5.1 and 2.6.  Do you plan on 
committing the fix for hash.cc?  I can confirm that I get no failure with it.

-- 
Eric Botcazou