dcop/iceauth msvc fix

[Peter Kümmel]

Michael Drüing wrote:
> Hi!
> 
> This small patch fixes dcop/iceauth for the MSVC debug builds. Without it,
> the debug runtime throws an assertion on one of the many parameter sanity
> checks.

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.

Peter