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/CommandLineTest.cpp b/unittests/Support/CommandLineTest.cpp
index 13e9038..43c8cbd 100644
--- a/unittests/Support/CommandLineTest.cpp
+++ b/unittests/Support/CommandLineTest.cpp
@@ -9,11 +9,9 @@
 
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Config/config.h"
-
 #include "gtest/gtest.h"
-
-#include <string>
 #include <stdlib.h>
+#include <string>
 
 using namespace llvm;