Fix private argument value for rb_respond_to

* Group the 2 rb_*respond_to C-API functions together.

Author: eregon

lib/truffle/truffle/cext.rb

@@ -412,8 +412,12 @@ def rb_class_real(ruby_class)
     ruby_class
   end
 
-  def rb_obj_respond_to(object, id, priv)
-    object.respond_to?(id, priv != 0)
+  def rb_obj_respond_to(object, name, priv)
+    object.respond_to?(name, priv != 0)
+  end
+
+  def rb_respond_to(object, name)
+    object.respond_to?(name, false)
   end
 
   def rb_check_convert_type(obj, type_name, method)
@@ -842,10 +846,6 @@ def rb_funcall_with_block(recv, meth, args, block)
     recv.public_send(meth, *args, &block)
   end
 
-  def rb_respond_to(object, name)
-    rb_obj_respond_to(object, name, false);
-  end
-
   def rb_funcallv_public(recv, meth, args)
     recv.public_send(meth, *args)
   end