[1/4] dinput: Return error for unknown property.

[Vitaliy Margolen]

Sergey Khodych wrote:
>> I'd like to see tests for this. Also lots of programs will break because 
>> they won't get some not significant property. No short - don't do this.
> But wine return a garbage value also for significant property. This 
> value may cause undefined behavior of application. The patch will make 
> errors more explicit.
> 
> 
On another hand - that's the way Wine been headed - break everything that's 
not implemented. So go ahead and put that error in.

Vitaliy.