msvcr90: Prefer native dll if manifest is not present

[Nikolay Sivov]

> +#if _MSVCR_VER == 90
> +    static const WCHAR msvcr90W[] = {'m','s','v','c','r','9','0','.','d','l','l',0};
> +    ACTCTX_SECTION_KEYED_DATA askd = { sizeof(askd) };
> +
> +    if(FindActCtxSectionStringW(FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX, NULL,
> +                ACTIVATION_CONTEXT_SECTION_DLL_REDIRECTION, msvcr90W, &askd)) {
> +        ReleaseActCtx(askd.hActCtx);
> +        return TRUE;
> +    }
> +
> +    return FALSE;
> +#endif
It looks like you won't be using context handle anyway, so you can just 
set flags to zero,
and return FindActCtxSectionStringW() value immediately.