Silence a few more warnings from GCC 5.1


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15472 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.ac b/configure.ac
index 532e42e..340fd20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1880,6 +1880,7 @@
   CFLAGS=$safe_CFLAGS
 ])
 
+AC_GCC_WARNING_SUBST_NO([memset-transposed-args], [FLAG_W_NO_MEMSET_TRANSPOSED_ARGS])
 AC_GCC_WARNING_SUBST_NO([nonnull], [FLAG_W_NO_NONNULL])
 AC_GCC_WARNING_SUBST_NO([overflow], [FLAG_W_NO_OVERFLOW])
 AC_GCC_WARNING_SUBST_NO([pointer-sign], [FLAG_W_NO_POINTER_SIGN])