Darwin13.supp should include suppression for known uninitialised read in pthread_rwlock_init() as required to pass the memcheck/tests/darwin/pth-supp test. Patch and discussion per BZ #339780.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14860 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/darwin13.supp b/darwin13.supp
index 1a66857..6ef99e9 100644
--- a/darwin13.supp
+++ b/darwin13.supp
@@ -134,6 +134,13 @@
    fun:setenv
 }
 
+# See https://bugs.kde.org/show_bug.cgi?id=196528
+{
+   macos-__pthread_rwlock_init-see-our-bug-196528
+   Memcheck:Cond
+   fun:pthread_rwlock_init
+}
+
 ############################################
 ## Non-leak errors