Interceot _platform_strncmp also on OSX 10.10.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14712 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/shared/vg_replace_strmem.c b/shared/vg_replace_strmem.c
index 79f8420..db2fb9d 100644
--- a/shared/vg_replace_strmem.c
+++ b/shared/vg_replace_strmem.c
@@ -580,7 +580,7 @@
 
 #elif defined(VGO_darwin)
  STRNCMP(VG_Z_LIBC_SONAME,        strncmp)
-# if DARWIN_VERS == DARWIN_10_9
+# if DARWIN_VERS == DARWIN_10_9 || DARWIN_VERS == DARWIN_10_10
   STRNCMP(libsystemZuplatformZddylib, _platform_strncmp)
 # endif