Fix a gcc -Wpedantix warning

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@349492 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/xray/xray_fdr_log_writer.h b/lib/xray/xray_fdr_log_writer.h
index dbd1a98..7712e13 100644
--- a/lib/xray/xray_fdr_log_writer.h
+++ b/lib/xray/xray_fdr_log_writer.h
@@ -41,7 +41,7 @@
                 Index >= std::tuple_size<typename std::remove_reference<
                              Tuple>::type>::value,
                 int>::type = 0>
-  static void serializeTo(char *, Tuple &&){};
+  static void serializeTo(char *, Tuple &&) {}
 };
 
 using Serializer = SerializerImpl<0>;