Windows: Fix mountinfo

Signed-off-by: John Howard <jhoward@microsoft.com>

pkg/mount/mountinfo_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux,!freebsd freebsd,!cgo
+// +build !windows,!linux,!freebsd freebsd,!cgo
 
 package mount
 

pkg/mount/mountinfo_windows.go

@@ -0,0 +1,6 @@
+package mount
+
+func parseMountTable() ([]*Info, error) {
+	// Do NOT return an error!
+	return nil, nil
+}