Fix unused variable warnings

test/http/message.cpp

@@ -160,7 +160,7 @@ public:
             other.moved_from = true;
         }
 
-        MoveFields& operator=(MoveFields&& other)
+        MoveFields& operator=(MoveFields&&)
         {
             return *this;
         }

test/http/test_parser.hpp

@@ -79,7 +79,7 @@ public:
     }
 
     void
-    on_field(field f, string_view,
+    on_field(field, string_view,
         string_view, error_code& ec)
     {
         got_on_field = true;

test/http/write.cpp

@@ -678,7 +678,7 @@ public:
         isRequest, Body, Fields> const& m, error_code& ec,
             Decorator const& decorator = Decorator{})
     {
-        serializer<isRequest, Body, Fields, Decorator> sr{m};
+        serializer<isRequest, Body, Fields, Decorator> sr{m, decorator};
         for(;;)
         {
             stream.nwrite = 0;
@@ -700,7 +700,7 @@ public:
             error_code& ec, yield_context yield,
                 Decorator const& decorator = Decorator{})
     {
-        serializer<isRequest, Body, Fields, Decorator> sr{m};
+        serializer<isRequest, Body, Fields, Decorator> sr{m, decorator};
         for(;;)
         {
             stream.nwrite = 0;