OLE32: fix gcc 4.0 -Wpointer-sign warnings

[Mike McCormack]

Robert Shearman wrote:

>> -    ULONG ref; /* reference counter for this object */
>> +    LONG ref; /* reference counter for this object */

> IUnknown_AddRef and IUnknown_Release both return ULONGs so it looks like 
> you are just moving the problem elsewhere. I think you should be casting 
> the values passed into Interlocked{Increment,Decrement} or find some 
> other nicer way of preventing that warning, possibly by ignoring them or 
> just turning off the -Wpointer-sign flag.

I don't think the reference count will get over MAXINT and it shouldn't 
go negative, so I can't see how this will cause a problem.

I already submitted a patch [1] to turn off -Wpointer-sign. Alexandre 
prefered that we fix the warnings.

Mike


[1] http://www.winehq.org/hypermail/wine-patches/2005/07/0003.html