Darwin14.supp should include suppression for known deliberate memory leak in setenv(). Per BZ #343303.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14889 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/NEWS b/NEWS
index 4cf2556..6d82de4 100644
--- a/NEWS
+++ b/NEWS
@@ -75,6 +75,7 @@
 342221  socket connect false positive uninit memory for unknown af family
 342795  Internal glibc __GI_mempcpy call should be intercepted
 343012  Unhandled syscall 319 (memfd_create)
+343303  Fix known deliberate memory leak in setenv() on Mac OS X 10.10
 n-i-bz  Provide implementations of certain compiler builtins to support
         compilers who may not provide those
 n-i-bz  Old STABS code is still being compiled, but never used. Remove it.