Fix one place where I missed a commented requirement for a particular
include ordering.

I've changed the structure so that clang-format will preserve this going
forward.

llvm-svn: 304788
diff --git a/llvm/lib/Support/Windows/WindowsSupport.h b/llvm/lib/Support/Windows/WindowsSupport.h
index 98995e8..d4599dc 100644
--- a/llvm/lib/Support/Windows/WindowsSupport.h
+++ b/llvm/lib/Support/Windows/WindowsSupport.h
@@ -44,9 +44,11 @@
 #include <cassert>
 #include <string>
 #include <system_error>
-#include <wincrypt.h> // Must be included after windows.h
 #include <windows.h>
 
+// Must be included after windows.h
+#include <wincrypt.h>
+
 /// Determines if the program is running on Windows 8 or newer. This
 /// reimplements one of the helpers in the Windows 8.1 SDK, which are intended
 /// to supercede raw calls to GetVersionEx. Old SDKs, Cygwin, and MinGW don't