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/ADT/SmallStringTest.cpp b/unittests/ADT/SmallStringTest.cpp
index 660ac44..9398e99 100644
--- a/unittests/ADT/SmallStringTest.cpp
+++ b/unittests/ADT/SmallStringTest.cpp
@@ -11,11 +11,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "gtest/gtest.h"
 #include "llvm/ADT/SmallString.h"
-#include <stdarg.h>
+#include "gtest/gtest.h"
 #include <climits>
 #include <cstring>
+#include <stdarg.h>
 
 using namespace llvm;