Indicate the fix for 339721 is only partial


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14605 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/NEWS b/NEWS
index de86c41..8c3320b 100644
--- a/NEWS
+++ b/NEWS
@@ -35,7 +35,7 @@
 339182 ppc64: AvSplat ought to load destination vector register with 16/16
        bytes stored prior
 339433 ppc64 lxvw4x instruction uses four 32-byte loads
-339721 assertion 'check_sibling == sibling' failed in readdwarf3.c ...
+(not fully fixed yet) 339721 assertion 'check_sibling == sibling' failed in readdwarf3.c ...
 n-i-bz Old STABS code is still being compiled, but never used. Remove it.
 n-i-bz Fix compilation on distros with glibc < 2.5