Update clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I58738190d06bf216a13048d768aa4054d820d2e8
diff --git a/src/pathwatch.hpp b/src/pathwatch.hpp
index 25fd6de..bc0cb3a 100644
--- a/src/pathwatch.hpp
+++ b/src/pathwatch.hpp
@@ -36,8 +36,7 @@
     virtual ~PathWatch() = default;
     PathWatch(const std::string& path, Callback& callback) :
         Watch(), objectPath(path), cb(callback), alreadyRan(false)
-    {
-    }
+    {}
 
     /** @brief Start the watch.
      *