FYI: fix PR 10684

[Tom Tromey <tromey@redhat.com>]

I am checking this in on the trunk and the 7.0 branch.

This patch comes from PR 10684.  It is small enough not to require
paperwork.

This is an obvious fix to the continued-line logic.

Tom

2009-09-23  John Wright  <john.wright@hp.com>

	PR gdb/10684:
	* event-top.c (command_line_handler): Terminate linebuffer before
	xstrdup.

Index: event-top.c
===================================================================
RCS file: /cvs/src/src/gdb/event-top.c,v
retrieving revision 1.68
diff -u -c -r1.68 event-top.c
cvs diff: conflicting specifications of output style
*** event-top.c	23 May 2009 16:17:15 -0000	1.68
--- event-top.c	23 Sep 2009 17:13:26 -0000
***************
*** 622,627 ****
--- 622,628 ----
  
    if (p > linebuffer && *(p - 1) == '\\')
      {
+       *p = '\0';
        p--;			/* Put on top of '\'.  */
  
        readline_input_state.linebuffer = xstrdup (linebuffer);