dinput: Remove unused variables

[Robert Shearman]

Andrew Talbot wrote:
> @@ -142,13 +142,12 @@ static INT find_joystick_devices(void)
>      {
>          CHAR device_name[MAX_PATH], *str;
>          INT len;
> -        int fd;
>  
>          len = sprintf(device_name, "%s%d", JOYDEV_NEW, i) + 1;
> -        if ((fd = open(device_name, O_RDONLY)) < 0)
> +        if (open(device_name, O_RDONLY) < 0)
>          {
>              len = sprintf(device_name, "%s%d", JOYDEV_OLD, i) + 1;
> -            if ((fd = open(device_name, O_RDONLY)) < 0) continue;
> +            if (open(device_name, O_RDONLY) < 0) continue;
>          }
>  
>          if (!(str = HeapAlloc(GetProcessHeap(), 0, len))) break;

Again, this needs to be fixed in another way as fd is being leaked.

-- 
Rob Shearman