[1.4>master] [MERGE #2301 @ThomsonTan] Don't marshal symbol when it is just created from the same script context
[1.4>master] [MERGE #2301 @ThomsonTan] Don't marshal symbol when it is just created from the same script context

Merge pull request #2301 from ThomsonTan:RemoveUnnecessaryMarshal

Marshal symbol in JavascriptObject::CreateKeysHelper is unnecessary because it is just created from the same script context.

mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore