Add protection from min/max macros

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145407 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/limits b/include/limits
index 14b49b1..ea579ad 100644
--- a/include/limits
+++ b/include/limits
@@ -109,6 +109,8 @@
 #include <__config>
 #include <type_traits>
 
+#include <__undef_min_max>
+
 #if defined(_MSC_VER)
 #include "support/win32/limits_win32.h"
 #endif // _MSC_VER