dcop/iceauth msvc fix

[Michael Drüing]

> Do you use mcvc 2005? The debug versions of the stl are very 
> pedantic and
> full of asserts (bound checks).
> Often the release version runs without problems but the debug version
> throws an exception.

Yes, this is with MSVC 2005. I also expect the release builds to run fine,
but I thought fixing it anyway would be better... 
However, since DCOP will be replaced soon (I expected a much longer
timeframe for that) I agree with Thiago that it doesn't matter much.

--Michael