XFAIL the -nostdinc++ test on Windows; it doesn't look like we even have the notion of separate C and C++ paths there

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99422 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/nostdincxx.cpp b/test/Driver/nostdincxx.cpp
index 8036488..7e00555 100644
--- a/test/Driver/nostdincxx.cpp
+++ b/test/Driver/nostdincxx.cpp
@@ -1,4 +1,4 @@
 // RUN: %clangxx -nostdinc++ %s 2>&1 | FileCheck %s
-
+// XFAIL: win32
 // CHECK: file not found
 #include <vector>