fix a too small buffer in CredUnmarshalCredentialW

[Hans Leidekker]

On Wed, 2012-11-14 at 09:48 +0100, Stefan Leichter wrote:
> +        char buffer[6];
> +        unsigned int buflen, *size = (unsigned int*) buffer;
>  
> -        if (len < 9 || !cred_decode( cred + 3, 6, (char *)&size ) || !size || size % sizeof(WCHAR))
> +        if (len < 9 || !cred_decode( cred + 3, 6, buffer ) || !*size || *size % sizeof(WCHAR)) 

You're still truncating the decoded size. You should instead make 'size' a
ULONGLONG and initialize it to 0.

Is this little-endian ARM?