sdbusplus/ sort headers

Change-Id: Ica77cc28ad21b06f00f15d2aecca400ead13a5f1
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/sdbusplus/bus.hpp.in b/sdbusplus/bus.hpp.in
index 7be0b92..8417028 100644
--- a/sdbusplus/bus.hpp.in
+++ b/sdbusplus/bus.hpp.in
@@ -1,15 +1,15 @@
 #pragma once
 
 #include <algorithm>
-#include <memory>
 #include <climits>
-#include <vector>
-#include <string>
-#include <systemd/sd-bus.h>
-#include <systemd/sd-event.h>
+#include <memory>
 #include <sdbusplus/exception.hpp>
 #include <sdbusplus/message.hpp>
 #include <sdbusplus/sdbus.hpp>
+#include <string>
+#include <systemd/sd-bus.h>
+#include <systemd/sd-event.h>
+#include <vector>
 
 namespace sdbusplus
 {