Throw a TypeError when calling "next" method of a newly created generator with a value

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index 20d5f991a547ad4514941c3043ef8982ab7e44ff..abc70f4984170abc612f5e1e26661d79a6313773 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -33,6 +33,7 @@ var kMessages = {
   code_gen_from_strings:         ["%0"],
   generator_running:             ["Generator is already running"],
   generator_finished:            ["Generator has already finished"],
+  generator_start:               ["Invalid argument for inital generator next method call"],
   // TypeError
   unexpected_token:              ["Unexpected token ", "%0"],
   unexpected_token_number:       ["Unexpected number"],