test: Mark two tests as XFAIL:mingw.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127076 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/vtable-debug-info.cpp b/test/CodeGenCXX/vtable-debug-info.cpp
index c355406..a008f7e 100644
--- a/test/CodeGenCXX/vtable-debug-info.cpp
+++ b/test/CodeGenCXX/vtable-debug-info.cpp
@@ -1,6 +1,6 @@
 // RUN: %clang -c -g %s -o /dev/null
 // Radar 8730409
-// XFAIL: win32
+// XFAIL: win32,mingw
 
 // FIXME: This test crashes on Windows.
 #ifdef _WIN32