Sort the #include lines for unittest/...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169250 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/ManagedStatic.cpp b/unittests/Support/ManagedStatic.cpp
index bfeb0a7..79eb098 100644
--- a/unittests/Support/ManagedStatic.cpp
+++ b/unittests/Support/ManagedStatic.cpp
@@ -7,8 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 #include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/Threading.h"
 #include "llvm/Config/config.h"
+#include "llvm/Support/Threading.h"
 #ifdef HAVE_PTHREAD_H
 #include <pthread.h>
 #endif