clang/test/Driver/linker-opts.c: Fix XFAIL that I removed win32.

Sorry for my 3rd commit :(

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169827 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/linker-opts.c b/test/Driver/linker-opts.c
index 623426e..7668a75 100644
--- a/test/Driver/linker-opts.c
+++ b/test/Driver/linker-opts.c
@@ -2,4 +2,5 @@
 // CHECK: "-L{{.*}}/test1"
 
 // GCC driver is used as linker on cygming. It should be aware of LIBRARY_PATH.
+// XFAIL: win32
 // REQUIRES: clang-driver