Fixed! (Re: [5.01] Runtime error in SocketPrim?!)

[Simon Marlow]

> The following withObject-modifications
> will have to be applied in several places, I fear. If nobody objects
> I'll wade through SocketPrim.hsc and send a complete diff tomorrow.
> We (Michael & me) are not sure if that's Linux/glibc specific...
> The older stuff surely *might* look broken in the rear view mirror.

Yes, well spotted.  It looks like I mis-translated some of the old code,
your fix looks right.

Cheers,
	Simon