libstdc++/10094: Regression: wfilebuf::showmanyc return value too high.

[Pétur Runólfsson]

> > Synopsis: Regression: wfilebuf::showmanyc return value too high.
> > 
> > State-Changed-From-To: open->analyzed
> > State-Changed-By: paolo
> > State-Changed-When: Sat Mar 15 13:32:25 2003
> > State-Changed-Why:
> >     Ok, however the (interesting) analysis is science fiction
> >     ;-) : the new showmanyc it's still in review!!
> 
> Indeed :-) seems there is a bug in the old implementation...

Or rather, there is bug in the testcase. My bad :-(

Sorry about this confusion
Petur