Fix a couple of issues with the use of the Protobuf.js API

src/node/src/protobuf_js_6_common.js

@@ -77,11 +77,11 @@ exports.serializeCls = function serializeCls(cls) {
    * @return {Buffer} The serialized object
    */
   return function serialize(arg) {
-    var message = cls.fromObject(arg);
+    var errMsg = cls.verify(arg);
-    var errMsg = cls.verify(message);
     if (errMsg) {
       throw Error(errMsg);
     }
+    var message = cls.create(arg);
     return cls.encode(message).finish();
   };
 };

src/node/test/common_test.js

@@ -176,7 +176,7 @@ describe('Proto message oneof serialize and deserialize', function() {
     var test_message2 = {oneof_choice: 'string_choice', string_choice: 'abc'};
     var serialized2 = oneofSerialize(test_message2);
     var deserialized2 = oneofDeserialize(serialized2);
-    assert.equal(deserialized2.oneof_choice, 'int_choice');
+    assert.equal(deserialized2.oneof_choice, 'string_choice');
   });
 });
 describe('Proto message enum serialize and deserialize', function() {