Give bound function name for aesthetic matters

src/v8natives.js

Index: src/v8natives.js
diff --git a/src/v8natives.js b/src/v8natives.js
index 76eeac6a58f98552c433103302590d543793b65e..a669890c63b3555224afc750a6a1fcbf7b1dd020 100644
--- a/src/v8natives.js
+++ b/src/v8natives.js
@@ -1728,7 +1728,7 @@ function FunctionBind(this_arg) { // Length is 1.
   if (!IS_SPEC_FUNCTION(this)) {
     throw new $TypeError('Bind must be called on a function');
   }
-  var boundFunction = function () {
+  var boundFunction = function BoundFunction() {
     // Poison .arguments and .caller, but is otherwise not detectable.
     "use strict";
     // This function must not use any object literals (Object, Array, RegExp),