[ob] fix typo in changelog date

[Doug Evans]

Checked in as obvious.

diff -u -p -r1.9954 ChangeLog
--- ChangeLog	6 Nov 2008 16:44:39 -0000	1.9954
+++ ChangeLog	7 Nov 2008 21:04:11 -0000
@@ -9252,7 +9252,7 @@
 	val_valid.
 	* NEWS: Mention watchpoints on inaccessible memory.
 
-2007-02-29  Daniel Jacobowitz  <dan@codesourcery.com>
+2008-02-29  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* Makefile.in (i386-nat.o): Update.
 	* amd64-linux-nat.c (_initialize_amd64_linux_nat): Call