Disable the ScanDepsReuseFilemanager test on Windows

Right now it fails.
I'm going to investigate it and fix it in follow-up commits.

llvm-svn: 369688

clang/unittests/Tooling/DependencyScannerTest.cpp

@@ -26,6 +26,8 @@
 namespace clang {
 namespace tooling {
 
+#ifndef _WIN32
+
 namespace {
 
 /// Prints out all of the gathered dependencies into a string.
@@ -114,5 +116,7 @@ TEST(DependencyScanner, ScanDepsReuseFilemanager) {
   EXPECT_EQ(Files.getNumUniqueRealFiles(), 2u);
 }
 
+#endif
+
 } // end namespace tooling
 } // end namespace clang