shlwapi: Use debugstr_w() in TRACE() message.

[Nikolay Sivov]

On 08.09.2016 23:51, Andrey Gusev wrote:
> -    TRACE("(%p, 0x%08x, %p, %p, %p, %p, %p, 0x%08x)\n", hUSKey, dwIndex,
> -          pszValueName, pcchValueNameLen, pdwType, pvData, pcbData, enumRegFlags);
> +    TRACE("(%p, 0x%08x, %s, %p, %p, %p, %p, 0x%08x)\n", hUSKey, dwIndex,
> +          debugstr_w(pszValueName), pcchValueNameLen, pdwType, pvData, pcbData, enumRegFlags);

This is wrong, it's an out parameter.