[TUI] correctly display windows source files

[Eli Zaretskii]

> Date: Wed, 11 Oct 2006 10:01:48 +0200
> From: Denis PILAT <denis.pilat@st.com>
> Cc: gdb-patches@sourceware.org
> >
> >It should be a simple matter of adding a test for EOF.
> >
> You're right, I can not do testing on all hosts and libc.
> Attached a new proposal.
> 
> In the case of "'\r'EOF" we keep EOF in "c" variable and we exit the 
> while just below anyway.

This new patch is okay with me.  Thanks.