Clang-format aos

It has drifted...  Clean it up a bit.

Change-Id: I2fe31a2187b4f690634ae6942786575db20192af
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/aos/stl_mutex/stl_mutex_test.cc b/aos/stl_mutex/stl_mutex_test.cc
index 5e88c56..5abd934 100644
--- a/aos/stl_mutex/stl_mutex_test.cc
+++ b/aos/stl_mutex/stl_mutex_test.cc
@@ -1,8 +1,7 @@
 #include "aos/stl_mutex/stl_mutex.h"
 
-#include "gtest/gtest.h"
-
 #include "aos/die.h"
+#include "gtest/gtest.h"
 
 namespace aos {
 namespace testing {