[PATCH] user32: Fix RealGetWindowClass() to return what it's supposed to for same process windows

[Dmitry Timoshkov]

Nikolay Sivov <nsivov at codeweavers.com> wrote:

> +    else if (ptr->builtin_type != -1)
> +    {
> +        const struct builtinclass_name *classname = &builtinclass_names[ptr->builtin_type];
> +        ret = min( count, classname->len ) - 1;
> +        memcpy( buffer, classname->nameA, ret );
> +        buffer[ret] = 0;
> +    }

In case of count = 0 this code will overwrite random data.

-- 
Dmitry.