drd/tests/std_thread2.supp: Add a suppression pattern

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14585 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/tests/std_thread2.supp b/drd/tests/std_thread2.supp
index 1da5da8..ae69e0d 100644
--- a/drd/tests/std_thread2.supp
+++ b/drd/tests/std_thread2.supp
@@ -4,6 +4,11 @@
    fun:_dl_lookup_symbol_x
 }
 {
+   drd-libpthread-nanosleep
+   drd:ConflictingAccess
+   fun:nanosleep
+}
+{
    pthread_create
    drd:ConflictingAccess
    fun:pthread_create@@GLIBC_2.2*