Fix a crash when stepping and unwinding fails

[Daniel Jacobowitz]

On Wed, May 17, 2006 at 12:02:20PM -0400, Daniel Jacobowitz wrote:
> [GDB 6.5 note: I have seen this bug reported roughly five times now.
> I think we need to fix it before the release.]

I didn't get any feedback from this patch, which is posted here:

  http://sourceware.org/ml/gdb-patches/2006-05/msg00379.html

Of course, I was mostly hoping for a response from Mark Kettenis, and I
believe he went on vacation a couple days later.  But I'd really like
to have this issue fixed for GDB 6.5.  Does anyone object to my
checking it in - and then, if Mark would like me to change it later,
I'll be sure to take care of it promptly.


-- 
Daniel Jacobowitz
CodeSourcery