JSON11: Fix unnamed arguments

diff --git a/ext/json11/json11.cpp b/ext/json11/json11.cpp
index b1da1fca2ab003851612dad7f7935f1dccce1a01..3ecfaffa2362ccfaf9e182f996cb6318a8a98c17 100644 (file)
--- a/ext/json11/json11.cpp
+++ b/ext/json11/json11.cpp
@@ -43,15 +43,15 @@ using std::move;
  * it may not be orderable.
  */
 struct NullStruct {
-    bool operator==(NullStruct) const { return true; }
-    bool operator<(NullStruct) const { return false; }
+    bool operator==(NullStruct /*unused*/) const { return true; }
+    bool operator<(NullStruct /*unused*/) const { return false; }
 };
 
 /* * * * * * * * * * * * * * * * * * * *
  * Serialization
  */
 
-static void dump(NullStruct, string &out) {
+static void dump(NullStruct /*unused*/, string &out) {
     out += "null";
 }